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Finding the Fourth Proportional to 399,155.04, 550,820.28 and 237,927

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Solution

The fourth proportional to 399,155.04, 550,820.28 and 237,927 is: 328,331.11

Step by Step Solution

  1. Step 1: Write the proportion equation
    399,155.04 : 550,820.28 = 237,927 : x
  2. Step 2: Convert to fraction form
    399,155.04/550,820.28 = 237,927/x
  3. Step 3: Cross multiply
    399,155.04x = 550,820.28 × 237,927
  4. Step 4: Simplify right side
    399,155.04x = 131,055,016,759.56
  5. Step 5: Solve for x
    x = 131,055,016,759.56/399,155.04
  6. Step 6: Final answer
    x = 328,331.11

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.