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Finding the Fourth Proportional to 485,601.80, 728,376.72 and 148,642.62

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Solution

The fourth proportional to 485,601.80, 728,376.72 and 148,642.62 is: 222,955.98

Step by Step Solution

  1. Step 1: Write the proportion equation
    485,601.80 : 728,376.72 = 148,642.62 : x
  2. Step 2: Convert to fraction form
    485,601.80/728,376.72 = 148,642.62/x
  3. Step 3: Cross multiply
    485,601.80x = 728,376.72 × 148,642.62
  4. Step 4: Simplify right side
    485,601.80x = 108,267,824,007.81
  5. Step 5: Solve for x
    x = 108,267,824,007.81/485,601.80
  6. Step 6: Final answer
    x = 222,955.98

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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.