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Finding the Fourth Proportional to 531,267.79, 733,128.16 and 289,545.16

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Solution

The fourth proportional to 531,267.79, 733,128.16 and 289,545.16 is: 399,560.66

Step by Step Solution

  1. Step 1: Write the proportion equation
    531,267.79 : 733,128.16 = 289,545.16 : x
  2. Step 2: Convert to fraction form
    531,267.79/733,128.16 = 289,545.16/x
  3. Step 3: Cross multiply
    531,267.79x = 733,128.16 × 289,545.16
  4. Step 4: Simplify right side
    531,267.79x = 212,273,705,998.20
  5. Step 5: Solve for x
    x = 212,273,705,998.20/531,267.79
  6. Step 6: Final answer
    x = 399,560.66

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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.