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Finding the Fourth Proportional to 485,849.73, 728,881.23 and 148,915.72

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Solution

The fourth proportional to 485,849.73, 728,881.23 and 148,915.72 is: 223,406.26

Step by Step Solution

  1. Step 1: Write the proportion equation
    485,849.73 : 728,881.23 = 148,915.72 : x
  2. Step 2: Convert to fraction form
    485,849.73/728,881.23 = 148,915.72/x
  3. Step 3: Cross multiply
    485,849.73x = 728,881.23 × 148,915.72
  4. Step 4: Simplify right side
    485,849.73x = 108,541,873,159.94
  5. Step 5: Solve for x
    x = 108,541,873,159.94/485,849.73
  6. Step 6: Final answer
    x = 223,406.26

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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.