Home / 255,405,132.78-352,459,069.75-137,930,451.71

Finding the Fourth Proportional to 255,405,132.78, 352,459,069.75 and 137,930,451.71

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Solution

The fourth proportional to 255,405,132.78, 352,459,069.75 and 137,930,451.71 is: 190,344,016.08

Step by Step Solution

  1. Step 1: Write the proportion equation
    255,405,132.78 : 352,459,069.75 = 137,930,451.71 : x
  2. Step 2: Convert to fraction form
    255,405,132.78/352,459,069.75 = 137,930,451.71/x
  3. Step 3: Cross multiply
    255,405,132.78x = 352,459,069.75 × 137,930,451.71
  4. Step 4: Simplify right side
    255,405,132.78x = 48,614,838,699,903,896
  5. Step 5: Solve for x
    x = 48,614,838,699,903,896/255,405,132.78
  6. Step 6: Final answer
    x = 190,344,016.08

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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.