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Finding the Fourth Proportional to 658,812.43, 988,208.25 and 209,526.81

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Solution

The fourth proportional to 658,812.43, 988,208.25 and 209,526.81 is: 314,286.91

Step by Step Solution

  1. Step 1: Write the proportion equation
    658,812.43 : 988,208.25 = 209,526.81 : x
  2. Step 2: Convert to fraction form
    658,812.43/988,208.25 = 209,526.81/x
  3. Step 3: Cross multiply
    658,812.43x = 988,208.25 × 209,526.81
  4. Step 4: Simplify right side
    658,812.43x = 207,056,122,238.18
  5. Step 5: Solve for x
    x = 207,056,122,238.18/658,812.43
  6. Step 6: Final answer
    x = 314,286.91

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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.