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Finding the Fourth Proportional to 485,842.86, 728,868.71 and 148,906.76

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Solution

The fourth proportional to 485,842.86, 728,868.71 and 148,906.76 is: 223,392.14

Step by Step Solution

  1. Step 1: Write the proportion equation
    485,842.86 : 728,868.71 = 148,906.76 : x
  2. Step 2: Convert to fraction form
    485,842.86/728,868.71 = 148,906.76/x
  3. Step 3: Cross multiply
    485,842.86x = 728,868.71 × 148,906.76
  4. Step 4: Simplify right side
    485,842.86x = 108,533,474,799.40
  5. Step 5: Solve for x
    x = 108,533,474,799.40/485,842.86
  6. Step 6: Final answer
    x = 223,392.14

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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.