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Finding the Fourth Proportional to 485,042.40, 727,390.80 and 169,509.60

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Solution

The fourth proportional to 485,042.40, 727,390.80 and 169,509.60 is: 254,204.01

Step by Step Solution

  1. Step 1: Write the proportion equation
    485,042.40 : 727,390.80 = 169,509.60 : x
  2. Step 2: Convert to fraction form
    485,042.40/727,390.80 = 169,509.60/x
  3. Step 3: Cross multiply
    485,042.40x = 727,390.80 × 169,509.60
  4. Step 4: Simplify right side
    485,042.40x = 123,299,723,551.68
  5. Step 5: Solve for x
    x = 123,299,723,551.68/485,042.40
  6. Step 6: Final answer
    x = 254,204.01

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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.