Home / 486,543.30-729,813.15-131,557.29

Finding the Fourth Proportional to 486,543.30, 729,813.15 and 131,557.29

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Solution

The fourth proportional to 486,543.30, 729,813.15 and 131,557.29 is: 197,335.45

Step by Step Solution

  1. Step 1: Write the proportion equation
    486,543.30 : 729,813.15 = 131,557.29 : x
  2. Step 2: Convert to fraction form
    486,543.30/729,813.15 = 131,557.29/x
  3. Step 3: Cross multiply
    486,543.30x = 729,813.15 × 131,557.29
  4. Step 4: Simplify right side
    486,543.30x = 96,012,240,220.36
  5. Step 5: Solve for x
    x = 96,012,240,220.36/486,543.30
  6. Step 6: Final answer
    x = 197,335.45

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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.