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Finding the Fourth Proportional to 485,307.88, 727,963.69 and 148,347.24

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Solution

The fourth proportional to 485,307.88, 727,963.69 and 148,347.24 is: 222,521.43

Step by Step Solution

  1. Step 1: Write the proportion equation
    485,307.88 : 727,963.69 = 148,347.24 : x
  2. Step 2: Convert to fraction form
    485,307.88/727,963.69 = 148,347.24/x
  3. Step 3: Cross multiply
    485,307.88x = 727,963.69 × 148,347.24
  4. Step 4: Simplify right side
    485,307.88x = 107,991,404,231.72
  5. Step 5: Solve for x
    x = 107,991,404,231.72/485,307.88
  6. Step 6: Final answer
    x = 222,521.43

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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.