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Finding the Fourth Proportional to 484,744.40, 727,116.60 and 129,813.20

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Solution

The fourth proportional to 484,744.40, 727,116.60 and 129,813.20 is: 194,719.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    484,744.40 : 727,116.60 = 129,813.20 : x
  2. Step 2: Convert to fraction form
    484,744.40/727,116.60 = 129,813.20/x
  3. Step 3: Cross multiply
    484,744.40x = 727,116.60 × 129,813.20
  4. Step 4: Simplify right side
    484,744.40x = 94,389,332,619.12
  5. Step 5: Solve for x
    x = 94,389,332,619.12/484,744.40
  6. Step 6: Final answer
    x = 194,719.80

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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.