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Finding the Fourth Proportional to 658,813.18, 988,209.36 and 209,527.57

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Solution

The fourth proportional to 658,813.18, 988,209.36 and 209,527.57 is: 314,288.04

Step by Step Solution

  1. Step 1: Write the proportion equation
    658,813.18 : 988,209.36 = 209,527.57 : x
  2. Step 2: Convert to fraction form
    658,813.18/988,209.36 = 209,527.57/x
  3. Step 3: Cross multiply
    658,813.18x = 988,209.36 × 209,527.57
  4. Step 4: Simplify right side
    658,813.18x = 207,057,105,852.06
  5. Step 5: Solve for x
    x = 207,057,105,852.06/658,813.18
  6. Step 6: Final answer
    x = 314,288.04

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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.