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Finding the Fourth Proportional to 472,809.60, 709,279.20 and 157,233.60

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Solution

The fourth proportional to 472,809.60, 709,279.20 and 157,233.60 is: 235,871.95

Step by Step Solution

  1. Step 1: Write the proportion equation
    472,809.60 : 709,279.20 = 157,233.60 : x
  2. Step 2: Convert to fraction form
    472,809.60/709,279.20 = 157,233.60/x
  3. Step 3: Cross multiply
    472,809.60x = 709,279.20 × 157,233.60
  4. Step 4: Simplify right side
    472,809.60x = 111,522,522,021.12
  5. Step 5: Solve for x
    x = 111,522,522,021.12/472,809.60
  6. Step 6: Final answer
    x = 235,871.95

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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.