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Finding the Fourth Proportional to 485,150.40, 727,725.60 and 169,639.20

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Solution

The fourth proportional to 485,150.40, 727,725.60 and 169,639.20 is: 254,458.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    485,150.40 : 727,725.60 = 169,639.20 : x
  2. Step 2: Convert to fraction form
    485,150.40/727,725.60 = 169,639.20/x
  3. Step 3: Cross multiply
    485,150.40x = 727,725.60 × 169,639.20
  4. Step 4: Simplify right side
    485,150.40x = 123,450,788,603.52
  5. Step 5: Solve for x
    x = 123,450,788,603.52/485,150.40
  6. Step 6: Final answer
    x = 254,458.80

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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.