Home / 287,355.60-431,032.02-87,675.30

Finding the Fourth Proportional to 287,355.60, 431,032.02 and 87,675.30

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Solution

The fourth proportional to 287,355.60, 431,032.02 and 87,675.30 is: 131,512.53

Step by Step Solution

  1. Step 1: Write the proportion equation
    287,355.60 : 431,032.02 = 87,675.30 : x
  2. Step 2: Convert to fraction form
    287,355.60/431,032.02 = 87,675.30/x
  3. Step 3: Cross multiply
    287,355.60x = 431,032.02 × 87,675.30
  4. Step 4: Simplify right side
    287,355.60x = 37,790,861,663.11
  5. Step 5: Solve for x
    x = 37,790,861,663.11/287,355.60
  6. Step 6: Final answer
    x = 131,512.53

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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.