Home / 287,937.40-397,350.90-158,877.04

Finding the Fourth Proportional to 287,937.40, 397,350.90 and 158,877.04

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Solution

The fourth proportional to 287,937.40, 397,350.90 and 158,877.04 is: 219,248.82

Step by Step Solution

  1. Step 1: Write the proportion equation
    287,937.40 : 397,350.90 = 158,877.04 : x
  2. Step 2: Convert to fraction form
    287,937.40/397,350.90 = 158,877.04/x
  3. Step 3: Cross multiply
    287,937.40x = 397,350.90 × 158,877.04
  4. Step 4: Simplify right side
    287,937.40x = 63,129,934,833.34
  5. Step 5: Solve for x
    x = 63,129,934,833.34/287,937.40
  6. Step 6: Final answer
    x = 219,248.82

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.