Home / 438,840.20-658,283.11-139,344.25

Finding the Fourth Proportional to 438,840.20, 658,283.11 and 139,344.25

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Solution

The fourth proportional to 438,840.20, 658,283.11 and 139,344.25 is: 209,023.62

Step by Step Solution

  1. Step 1: Write the proportion equation
    438,840.20 : 658,283.11 = 139,344.25 : x
  2. Step 2: Convert to fraction form
    438,840.20/658,283.11 = 139,344.25/x
  3. Step 3: Cross multiply
    438,840.20x = 658,283.11 × 139,344.25
  4. Step 4: Simplify right side
    438,840.20x = 91,727,964,256.55
  5. Step 5: Solve for x
    x = 91,727,964,256.55/438,840.20
  6. Step 6: Final answer
    x = 209,023.62

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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.