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Finding the Fourth Proportional to 279,113.45, 418,671.38 and 89,602.61

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Solution

The fourth proportional to 279,113.45, 418,671.38 and 89,602.61 is: 134,404.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    279,113.45 : 418,671.38 = 89,602.61 : x
  2. Step 2: Convert to fraction form
    279,113.45/418,671.38 = 89,602.61/x
  3. Step 3: Cross multiply
    279,113.45x = 418,671.38 × 89,602.61
  4. Step 4: Simplify right side
    279,113.45x = 37,514,046,510.95
  5. Step 5: Solve for x
    x = 37,514,046,510.95/279,113.45
  6. Step 6: Final answer
    x = 134,404.30

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1.5x scale

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.