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Finding the Fourth Proportional to 658,239.71, 987,258.71 and 208,902.33

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Solution

The fourth proportional to 658,239.71, 987,258.71 and 208,902.33 is: 313,321.49

Step by Step Solution

  1. Step 1: Write the proportion equation
    658,239.71 : 987,258.71 = 208,902.33 : x
  2. Step 2: Convert to fraction form
    658,239.71/987,258.71 = 208,902.33/x
  3. Step 3: Cross multiply
    658,239.71x = 987,258.71 × 208,902.33
  4. Step 4: Simplify right side
    658,239.71x = 206,240,645,354.05
  5. Step 5: Solve for x
    x = 206,240,645,354.05/658,239.71
  6. Step 6: Final answer
    x = 313,321.49

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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.