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Finding the Fourth Proportional to 506,195.31, 698,564.12 and 279,855.39

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Solution

The fourth proportional to 506,195.31, 698,564.12 and 279,855.39 is: 386,208.51

Step by Step Solution

  1. Step 1: Write the proportion equation
    506,195.31 : 698,564.12 = 279,855.39 : x
  2. Step 2: Convert to fraction form
    506,195.31/698,564.12 = 279,855.39/x
  3. Step 3: Cross multiply
    506,195.31x = 698,564.12 × 279,855.39
  4. Step 4: Simplify right side
    506,195.31x = 195,496,934,242.61
  5. Step 5: Solve for x
    x = 195,496,934,242.61/506,195.31
  6. Step 6: Final answer
    x = 386,208.51

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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.