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Finding the Fourth Proportional to 611,942.76, 918,273.72 and 256,929.48

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Solution

The fourth proportional to 611,942.76, 918,273.72 and 256,929.48 is: 385,545.19

Step by Step Solution

  1. Step 1: Write the proportion equation
    611,942.76 : 918,273.72 = 256,929.48 : x
  2. Step 2: Convert to fraction form
    611,942.76/918,273.72 = 256,929.48/x
  3. Step 3: Cross multiply
    611,942.76x = 918,273.72 × 256,929.48
  4. Step 4: Simplify right side
    611,942.76x = 235,931,589,377.27
  5. Step 5: Solve for x
    x = 235,931,589,377.27/611,942.76
  6. Step 6: Final answer
    x = 385,545.19

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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.