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Finding the Fourth Proportional to 485,751.06, 728,675.19 and 148,787.82

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Solution

The fourth proportional to 485,751.06, 728,675.19 and 148,787.82 is: 223,196.62

Step by Step Solution

  1. Step 1: Write the proportion equation
    485,751.06 : 728,675.19 = 148,787.82 : x
  2. Step 2: Convert to fraction form
    485,751.06/728,675.19 = 148,787.82/x
  3. Step 3: Cross multiply
    485,751.06x = 728,675.19 × 148,787.82
  4. Step 4: Simplify right side
    485,751.06x = 108,417,993,008.19
  5. Step 5: Solve for x
    x = 108,417,993,008.19/485,751.06
  6. Step 6: Final answer
    x = 223,196.62

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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.