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Finding the Fourth Proportional to 288,635.10, 432,962.55 and 88,953.90

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Solution

The fourth proportional to 288,635.10, 432,962.55 and 88,953.90 is: 133,433.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    288,635.10 : 432,962.55 = 88,953.90 : x
  2. Step 2: Convert to fraction form
    288,635.10/432,962.55 = 88,953.90/x
  3. Step 3: Cross multiply
    288,635.10x = 432,962.55 × 88,953.90
  4. Step 4: Simplify right side
    288,635.10x = 38,513,707,376.45
  5. Step 5: Solve for x
    x = 38,513,707,376.45/288,635.10
  6. Step 6: Final answer
    x = 133,433.90

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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.