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Finding the Fourth Proportional to 472,870.80, 709,306.20 and 157,359.60

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Solution

The fourth proportional to 472,870.80, 709,306.20 and 157,359.60 is: 236,039.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    472,870.80 : 709,306.20 = 157,359.60 : x
  2. Step 2: Convert to fraction form
    472,870.80/709,306.20 = 157,359.60/x
  3. Step 3: Cross multiply
    472,870.80x = 709,306.20 × 157,359.60
  4. Step 4: Simplify right side
    472,870.80x = 111,616,139,909.52
  5. Step 5: Solve for x
    x = 111,616,139,909.52/472,870.80
  6. Step 6: Final answer
    x = 236,039.40

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Similar ratio
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1.5x scale

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.