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Finding the Fourth Proportional to 542,504.59, 813,790.72 and 143,145.76

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Solution

The fourth proportional to 542,504.59, 813,790.72 and 143,145.76 is: 214,727.56

Step by Step Solution

  1. Step 1: Write the proportion equation
    542,504.59 : 813,790.72 = 143,145.76 : x
  2. Step 2: Convert to fraction form
    542,504.59/813,790.72 = 143,145.76/x
  3. Step 3: Cross multiply
    542,504.59x = 813,790.72 × 143,145.76
  4. Step 4: Simplify right side
    542,504.59x = 116,490,688,879.47
  5. Step 5: Solve for x
    x = 116,490,688,879.47/542,504.59
  6. Step 6: Final answer
    x = 214,727.56

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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.