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Finding the Fourth Proportional to 360,931.80, 540,231.30 and 281,616.60

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Solution

The fourth proportional to 360,931.80, 540,231.30 and 281,616.60 is: 421,514.82

Step by Step Solution

  1. Step 1: Write the proportion equation
    360,931.80 : 540,231.30 = 281,616.60 : x
  2. Step 2: Convert to fraction form
    360,931.80/540,231.30 = 281,616.60/x
  3. Step 3: Cross multiply
    360,931.80x = 540,231.30 × 281,616.60
  4. Step 4: Simplify right side
    360,931.80x = 152,138,101,919.58
  5. Step 5: Solve for x
    x = 152,138,101,919.58/360,931.80
  6. Step 6: Final answer
    x = 421,514.82

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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.