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Finding the Fourth Proportional to 462,630.76, 638,184.18 and 281,398.12

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Solution

The fourth proportional to 462,630.76, 638,184.18 and 281,398.12 is: 388,179.61

Step by Step Solution

  1. Step 1: Write the proportion equation
    462,630.76 : 638,184.18 = 281,398.12 : x
  2. Step 2: Convert to fraction form
    462,630.76/638,184.18 = 281,398.12/x
  3. Step 3: Cross multiply
    462,630.76x = 638,184.18 × 281,398.12
  4. Step 4: Simplify right side
    462,630.76x = 179,583,828,465.74
  5. Step 5: Solve for x
    x = 179,583,828,465.74/462,630.76
  6. Step 6: Final answer
    x = 388,179.61

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.