Home / 289,118,160,459.45-398,986,676,854.24-158,921,229,885.18

Finding the Fourth Proportional to 289,118,160,459.45, 398,986,676,854.24 and 158,921,229,885.18

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Solution

The fourth proportional to 289,118,160,459.45, 398,986,676,854.24 and 158,921,229,885.18 is: 219,313,284,550.21

Step by Step Solution

  1. Step 1: Write the proportion equation
    289,118,160,459.45 : 398,986,676,854.24 = 158,921,229,885.18 : x
  2. Step 2: Convert to fraction form
    289,118,160,459.45/398,986,676,854.24 = 158,921,229,885.18/x
  3. Step 3: Cross multiply
    289,118,160,459.45x = 398,986,676,854.24 × 158,921,229,885.18
  4. Step 4: Simplify right side
    289,118,160,459.45x = 63,407,453,393,476,699,291,648
  5. Step 5: Solve for x
    x = 63,407,453,393,476,699,291,648/289,118,160,459.45
  6. Step 6: Final answer
    x = 219,313,284,550.21

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.