Home / 216,668,670.78-325,027,666.20-78,559,319.46

Finding the Fourth Proportional to 216,668,670.78, 325,027,666.20 and 78,559,319.46

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Solution

The fourth proportional to 216,668,670.78, 325,027,666.20 and 78,559,319.46 is: 117,847,920.38

Step by Step Solution

  1. Step 1: Write the proportion equation
    216,668,670.78 : 325,027,666.20 = 78,559,319.46 : x
  2. Step 2: Convert to fraction form
    216,668,670.78/325,027,666.20 = 78,559,319.46/x
  3. Step 3: Cross multiply
    216,668,670.78x = 325,027,666.20 × 78,559,319.46
  4. Step 4: Simplify right side
    216,668,670.78x = 25,533,952,262,344,040
  5. Step 5: Solve for x
    x = 25,533,952,262,344,040/216,668,670.78
  6. Step 6: Final answer
    x = 117,847,920.38

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.