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Finding the Fourth Proportional to 485,074.40, 727,438.80 and 169,541.60

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Solution

The fourth proportional to 485,074.40, 727,438.80 and 169,541.60 is: 254,252.00

Step by Step Solution

  1. Step 1: Write the proportion equation
    485,074.40 : 727,438.80 = 169,541.60 : x
  2. Step 2: Convert to fraction form
    485,074.40/727,438.80 = 169,541.60/x
  3. Step 3: Cross multiply
    485,074.40x = 727,438.80 × 169,541.60
  4. Step 4: Simplify right side
    485,074.40x = 123,331,138,054.08
  5. Step 5: Solve for x
    x = 123,331,138,054.08/485,074.40
  6. Step 6: Final answer
    x = 254,252.00

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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.