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Finding the Fourth Proportional to 485,270.39, 727,905.59 and 148,312.01

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Solution

The fourth proportional to 485,270.39, 727,905.59 and 148,312.01 is: 222,468.02

Step by Step Solution

  1. Step 1: Write the proportion equation
    485,270.39 : 727,905.59 = 148,312.01 : x
  2. Step 2: Convert to fraction form
    485,270.39/727,905.59 = 148,312.01/x
  3. Step 3: Cross multiply
    485,270.39x = 727,905.59 × 148,312.01
  4. Step 4: Simplify right side
    485,270.39x = 107,957,140,401.58
  5. Step 5: Solve for x
    x = 107,957,140,401.58/485,270.39
  6. Step 6: Final answer
    x = 222,468.02

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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.