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Finding the Fourth Proportional to 542,856.80, 813,896.40 and 227,151.20

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Solution

The fourth proportional to 542,856.80, 813,896.40 and 227,151.20 is: 340,564.11

Step by Step Solution

  1. Step 1: Write the proportion equation
    542,856.80 : 813,896.40 = 227,151.20 : x
  2. Step 2: Convert to fraction form
    542,856.80/813,896.40 = 227,151.20/x
  3. Step 3: Cross multiply
    542,856.80x = 813,896.40 × 227,151.20
  4. Step 4: Simplify right side
    542,856.80x = 184,877,543,935.68
  5. Step 5: Solve for x
    x = 184,877,543,935.68/542,856.80
  6. Step 6: Final answer
    x = 340,564.11

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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.