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Finding the Fourth Proportional to 506,239.86, 698,625.09 and 279,899.94

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Solution

The fourth proportional to 506,239.86, 698,625.09 and 279,899.94 is: 386,269.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    506,239.86 : 698,625.09 = 279,899.94 : x
  2. Step 2: Convert to fraction form
    506,239.86/698,625.09 = 279,899.94/x
  3. Step 3: Cross multiply
    506,239.86x = 698,625.09 × 279,899.94
  4. Step 4: Simplify right side
    506,239.86x = 195,545,120,773.50
  5. Step 5: Solve for x
    x = 195,545,120,773.50/506,239.86
  6. Step 6: Final answer
    x = 386,269.70

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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.