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Finding the Fourth Proportional to 268,292.80, 402,439.20 and 162,004.60

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Solution

The fourth proportional to 268,292.80, 402,439.20 and 162,004.60 is: 243,006.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    268,292.80 : 402,439.20 = 162,004.60 : x
  2. Step 2: Convert to fraction form
    268,292.80/402,439.20 = 162,004.60/x
  3. Step 3: Cross multiply
    268,292.80x = 402,439.20 × 162,004.60
  4. Step 4: Simplify right side
    268,292.80x = 65,197,001,620.32
  5. Step 5: Solve for x
    x = 65,197,001,620.32/268,292.80
  6. Step 6: Final answer
    x = 243,006.90

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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.