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Finding the Fourth Proportional to 288,389.80, 432,617.10 and 88,708.60

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Solution

The fourth proportional to 288,389.80, 432,617.10 and 88,708.60 is: 133,072.87

Step by Step Solution

  1. Step 1: Write the proportion equation
    288,389.80 : 432,617.10 = 88,708.60 : x
  2. Step 2: Convert to fraction form
    288,389.80/432,617.10 = 88,708.60/x
  3. Step 3: Cross multiply
    288,389.80x = 432,617.10 × 88,708.60
  4. Step 4: Simplify right side
    288,389.80x = 38,376,857,277.06
  5. Step 5: Solve for x
    x = 38,376,857,277.06/288,389.80
  6. Step 6: Final answer
    x = 133,072.87

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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.