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Finding the Fourth Proportional to 266,209.20, 399,393.84 and 159,710.40

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Solution

The fourth proportional to 266,209.20, 399,393.84 and 159,710.40 is: 239,613.62

Step by Step Solution

  1. Step 1: Write the proportion equation
    266,209.20 : 399,393.84 = 159,710.40 : x
  2. Step 2: Convert to fraction form
    266,209.20/399,393.84 = 159,710.40/x
  3. Step 3: Cross multiply
    266,209.20x = 399,393.84 × 159,710.40
  4. Step 4: Simplify right side
    266,209.20x = 63,787,349,943.94
  5. Step 5: Solve for x
    x = 63,787,349,943.94/266,209.20
  6. Step 6: Final answer
    x = 239,613.62

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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.