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Finding the Fourth Proportional to 658,812.50, 988,218.76 and 209,534.30

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Solution

The fourth proportional to 658,812.50, 988,218.76 and 209,534.30 is: 314,301.45

Step by Step Solution

  1. Step 1: Write the proportion equation
    658,812.50 : 988,218.76 = 209,534.30 : x
  2. Step 2: Convert to fraction form
    658,812.50/988,218.76 = 209,534.30/x
  3. Step 3: Cross multiply
    658,812.50x = 988,218.76 × 209,534.30
  4. Step 4: Simplify right side
    658,812.50x = 207,065,726,123.47
  5. Step 5: Solve for x
    x = 207,065,726,123.47/658,812.50
  6. Step 6: Final answer
    x = 314,301.45

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Similar ratio
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1.5x scale

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.