Home / 287,688.50-431,517.09-88,008.89

Finding the Fourth Proportional to 287,688.50, 431,517.09 and 88,008.89

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Solution

The fourth proportional to 287,688.50, 431,517.09 and 88,008.89 is: 132,008.54

Step by Step Solution

  1. Step 1: Write the proportion equation
    287,688.50 : 431,517.09 = 88,008.89 : x
  2. Step 2: Convert to fraction form
    287,688.50/431,517.09 = 88,008.89/x
  3. Step 3: Cross multiply
    287,688.50x = 431,517.09 × 88,008.89
  4. Step 4: Simplify right side
    287,688.50x = 37,977,337,949.34
  5. Step 5: Solve for x
    x = 37,977,337,949.34/287,688.50
  6. Step 6: Final answer
    x = 132,008.54

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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.