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Finding the Fourth Proportional to 485,333.96, 728,002.86 and 148,373.36

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Solution

The fourth proportional to 485,333.96, 728,002.86 and 148,373.36 is: 222,560.63

Step by Step Solution

  1. Step 1: Write the proportion equation
    485,333.96 : 728,002.86 = 148,373.36 : x
  2. Step 2: Convert to fraction form
    485,333.96/728,002.86 = 148,373.36/x
  3. Step 3: Cross multiply
    485,333.96x = 728,002.86 × 148,373.36
  4. Step 4: Simplify right side
    485,333.96x = 108,016,230,427.81
  5. Step 5: Solve for x
    x = 108,016,230,427.81/485,333.96
  6. Step 6: Final answer
    x = 222,560.63

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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.