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Finding the Fourth Proportional to 287,683.70, 431,510.01 and 88,004.12

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Solution

The fourth proportional to 287,683.70, 431,510.01 and 88,004.12 is: 132,001.42

Step by Step Solution

  1. Step 1: Write the proportion equation
    287,683.70 : 431,510.01 = 88,004.12 : x
  2. Step 2: Convert to fraction form
    287,683.70/431,510.01 = 88,004.12/x
  3. Step 3: Cross multiply
    287,683.70x = 431,510.01 × 88,004.12
  4. Step 4: Simplify right side
    287,683.70x = 37,974,656,543.69
  5. Step 5: Solve for x
    x = 37,974,656,543.69/287,683.70
  6. Step 6: Final answer
    x = 132,001.42

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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.