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Finding the Fourth Proportional to 488,453.85, 732,688.34 and 172,689.93

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Solution

The fourth proportional to 488,453.85, 732,688.34 and 172,689.93 is: 259,037.57

Step by Step Solution

  1. Step 1: Write the proportion equation
    488,453.85 : 732,688.34 = 172,689.93 : x
  2. Step 2: Convert to fraction form
    488,453.85/732,688.34 = 172,689.93/x
  3. Step 3: Cross multiply
    488,453.85x = 732,688.34 × 172,689.93
  4. Step 4: Simplify right side
    488,453.85x = 126,527,897,282.97
  5. Step 5: Solve for x
    x = 126,527,897,282.97/488,453.85
  6. Step 6: Final answer
    x = 259,037.57

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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.