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Finding the Fourth Proportional to 659,285.39, 988,600.95 and 209,947.70

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Solution

The fourth proportional to 659,285.39, 988,600.95 and 209,947.70 is: 314,817.37

Step by Step Solution

  1. Step 1: Write the proportion equation
    659,285.39 : 988,600.95 = 209,947.70 : x
  2. Step 2: Convert to fraction form
    659,285.39/988,600.95 = 209,947.70/x
  3. Step 3: Cross multiply
    659,285.39x = 988,600.95 × 209,947.70
  4. Step 4: Simplify right side
    659,285.39x = 207,554,495,670.32
  5. Step 5: Solve for x
    x = 207,554,495,670.32/659,285.39
  6. Step 6: Final answer
    x = 314,817.37

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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.