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Finding the Fourth Proportional to 288,626.60, 432,949.80 and 88,945.40

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Solution

The fourth proportional to 288,626.60, 432,949.80 and 88,945.40 is: 133,421.15

Step by Step Solution

  1. Step 1: Write the proportion equation
    288,626.60 : 432,949.80 = 88,945.40 : x
  2. Step 2: Convert to fraction form
    288,626.60/432,949.80 = 88,945.40/x
  3. Step 3: Cross multiply
    288,626.60x = 432,949.80 × 88,945.40
  4. Step 4: Simplify right side
    288,626.60x = 38,508,893,140.92
  5. Step 5: Solve for x
    x = 38,508,893,140.92/288,626.60
  6. Step 6: Final answer
    x = 133,421.15

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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.