Home / 287,947.32-431,989.02-130,175.52

Finding the Fourth Proportional to 287,947.32, 431,989.02 and 130,175.52

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Solution

The fourth proportional to 287,947.32, 431,989.02 and 130,175.52 is: 195,294.04

Step by Step Solution

  1. Step 1: Write the proportion equation
    287,947.32 : 431,989.02 = 130,175.52 : x
  2. Step 2: Convert to fraction form
    287,947.32/431,989.02 = 130,175.52/x
  3. Step 3: Cross multiply
    287,947.32x = 431,989.02 × 130,175.52
  4. Step 4: Simplify right side
    287,947.32x = 56,234,395,312.79
  5. Step 5: Solve for x
    x = 56,234,395,312.79/287,947.32
  6. Step 6: Final answer
    x = 195,294.04

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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.