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Finding the Fourth Proportional to 636,240.80, 954,311.52 and 281,266.40

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Solution

The fourth proportional to 636,240.80, 954,311.52 and 281,266.40 is: 421,877.64

Step by Step Solution

  1. Step 1: Write the proportion equation
    636,240.80 : 954,311.52 = 281,266.40 : x
  2. Step 2: Convert to fraction form
    636,240.80/954,311.52 = 281,266.40/x
  3. Step 3: Cross multiply
    636,240.80x = 954,311.52 × 281,266.40
  4. Step 4: Simplify right side
    636,240.80x = 268,415,765,708.93
  5. Step 5: Solve for x
    x = 268,415,765,708.93/636,240.80
  6. Step 6: Final answer
    x = 421,877.64

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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.