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Finding the Fourth Proportional to 406,042.80, 608,545.80 and 312,082.80

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Solution

The fourth proportional to 406,042.80, 608,545.80 and 312,082.80 is: 467,725.76

Step by Step Solution

  1. Step 1: Write the proportion equation
    406,042.80 : 608,545.80 = 312,082.80 : x
  2. Step 2: Convert to fraction form
    406,042.80/608,545.80 = 312,082.80/x
  3. Step 3: Cross multiply
    406,042.80x = 608,545.80 × 312,082.80
  4. Step 4: Simplify right side
    406,042.80x = 189,916,677,192.24
  5. Step 5: Solve for x
    x = 189,916,677,192.24/406,042.80
  6. Step 6: Final answer
    x = 467,725.76

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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.