Home / 438,883.72-658,258.35-139,325.20

Finding the Fourth Proportional to 438,883.72, 658,258.35 and 139,325.20

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Solution

The fourth proportional to 438,883.72, 658,258.35 and 139,325.20 is: 208,966.46

Step by Step Solution

  1. Step 1: Write the proportion equation
    438,883.72 : 658,258.35 = 139,325.20 : x
  2. Step 2: Convert to fraction form
    438,883.72/658,258.35 = 139,325.20/x
  3. Step 3: Cross multiply
    438,883.72x = 658,258.35 × 139,325.20
  4. Step 4: Simplify right side
    438,883.72x = 91,711,976,265.42
  5. Step 5: Solve for x
    x = 91,711,976,265.42/438,883.72
  6. Step 6: Final answer
    x = 208,966.46

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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.