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Finding the Fourth Proportional to 485,399.52, 727,794.86 and 148,328.15

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Solution

The fourth proportional to 485,399.52, 727,794.86 and 148,328.15 is: 222,399.19

Step by Step Solution

  1. Step 1: Write the proportion equation
    485,399.52 : 727,794.86 = 148,328.15 : x
  2. Step 2: Convert to fraction form
    485,399.52/727,794.86 = 148,328.15/x
  3. Step 3: Cross multiply
    485,399.52x = 727,794.86 × 148,328.15
  4. Step 4: Simplify right side
    485,399.52x = 107,952,460,782.69
  5. Step 5: Solve for x
    x = 107,952,460,782.69/485,399.52
  6. Step 6: Final answer
    x = 222,399.19

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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.