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Finding the Fourth Proportional to 658,812.90, 988,209 and 209,527.32

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Solution

The fourth proportional to 658,812.90, 988,209 and 209,527.32 is: 314,287.69

Step by Step Solution

  1. Step 1: Write the proportion equation
    658,812.90 : 988,209 = 209,527.32 : x
  2. Step 2: Convert to fraction form
    658,812.90/988,209 = 209,527.32/x
  3. Step 3: Cross multiply
    658,812.90x = 988,209 × 209,527.32
  4. Step 4: Simplify right side
    658,812.90x = 207,056,783,369.88
  5. Step 5: Solve for x
    x = 207,056,783,369.88/658,812.90
  6. Step 6: Final answer
    x = 314,287.69

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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.