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Finding the Fourth Proportional to 268,472.52, 402,457.28 and 90,855.18

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Solution

The fourth proportional to 268,472.52, 402,457.28 and 90,855.18 is: 136,197.66

Step by Step Solution

  1. Step 1: Write the proportion equation
    268,472.52 : 402,457.28 = 90,855.18 : x
  2. Step 2: Convert to fraction form
    268,472.52/402,457.28 = 90,855.18/x
  3. Step 3: Cross multiply
    268,472.52x = 402,457.28 × 90,855.18
  4. Step 4: Simplify right side
    268,472.52x = 36,565,328,162.43
  5. Step 5: Solve for x
    x = 36,565,328,162.43/268,472.52
  6. Step 6: Final answer
    x = 136,197.66

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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.