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Finding the Fourth Proportional to 506,135.58, 698,439.69 and 279,766.50

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Solution

The fourth proportional to 506,135.58, 698,439.69 and 279,766.50 is: 386,062.62

Step by Step Solution

  1. Step 1: Write the proportion equation
    506,135.58 : 698,439.69 = 279,766.50 : x
  2. Step 2: Convert to fraction form
    506,135.58/698,439.69 = 279,766.50/x
  3. Step 3: Cross multiply
    506,135.58x = 698,439.69 × 279,766.50
  4. Step 4: Simplify right side
    506,135.58x = 195,400,027,532.39
  5. Step 5: Solve for x
    x = 195,400,027,532.39/506,135.58
  6. Step 6: Final answer
    x = 386,062.62

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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.