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Finding the Fourth Proportional to 438,948.32, 658,422.60 and 123,405.32

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Solution

The fourth proportional to 438,948.32, 658,422.60 and 123,405.32 is: 185,108.01

Step by Step Solution

  1. Step 1: Write the proportion equation
    438,948.32 : 658,422.60 = 123,405.32 : x
  2. Step 2: Convert to fraction form
    438,948.32/658,422.60 = 123,405.32/x
  3. Step 3: Cross multiply
    438,948.32x = 658,422.60 × 123,405.32
  4. Step 4: Simplify right side
    438,948.32x = 81,252,851,648.23
  5. Step 5: Solve for x
    x = 81,252,851,648.23/438,948.32
  6. Step 6: Final answer
    x = 185,108.01

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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.