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Finding the Fourth Proportional to 485,148.40, 727,722.60 and 169,637.20

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Solution

The fourth proportional to 485,148.40, 727,722.60 and 169,637.20 is: 254,455.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    485,148.40 : 727,722.60 = 169,637.20 : x
  2. Step 2: Convert to fraction form
    485,148.40/727,722.60 = 169,637.20/x
  3. Step 3: Cross multiply
    485,148.40x = 727,722.60 × 169,637.20
  4. Step 4: Simplify right side
    485,148.40x = 123,448,824,240.72
  5. Step 5: Solve for x
    x = 123,448,824,240.72/485,148.40
  6. Step 6: Final answer
    x = 254,455.80

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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.