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Finding the Fourth Proportional to 385,551.12, 532,039.68 and 215,752.44

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Solution

The fourth proportional to 385,551.12, 532,039.68 and 215,752.44 is: 297,726.69

Step by Step Solution

  1. Step 1: Write the proportion equation
    385,551.12 : 532,039.68 = 215,752.44 : x
  2. Step 2: Convert to fraction form
    385,551.12/532,039.68 = 215,752.44/x
  3. Step 3: Cross multiply
    385,551.12x = 532,039.68 × 215,752.44
  4. Step 4: Simplify right side
    385,551.12x = 114,788,859,136.82
  5. Step 5: Solve for x
    x = 114,788,859,136.82/385,551.12
  6. Step 6: Final answer
    x = 297,726.69

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.