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Finding the Fourth Proportional to 316,498.44, 474,508.88 and 103,138.95

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Solution

The fourth proportional to 316,498.44, 474,508.88 and 103,138.95 is: 154,630.61

Step by Step Solution

  1. Step 1: Write the proportion equation
    316,498.44 : 474,508.88 = 103,138.95 : x
  2. Step 2: Convert to fraction form
    316,498.44/474,508.88 = 103,138.95/x
  3. Step 3: Cross multiply
    316,498.44x = 474,508.88 × 103,138.95
  4. Step 4: Simplify right side
    316,498.44x = 48,940,345,875.85
  5. Step 5: Solve for x
    x = 48,940,345,875.85/316,498.44
  6. Step 6: Final answer
    x = 154,630.61

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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.