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Finding the Fourth Proportional to 279,000.27, 418,531.19 and 89,415.72

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Solution

The fourth proportional to 279,000.27, 418,531.19 and 89,415.72 is: 134,133.44

Step by Step Solution

  1. Step 1: Write the proportion equation
    279,000.27 : 418,531.19 = 89,415.72 : x
  2. Step 2: Convert to fraction form
    279,000.27/418,531.19 = 89,415.72/x
  3. Step 3: Cross multiply
    279,000.27x = 418,531.19 × 89,415.72
  4. Step 4: Simplify right side
    279,000.27x = 37,423,267,249.23
  5. Step 5: Solve for x
    x = 37,423,267,249.23/279,000.27
  6. Step 6: Final answer
    x = 134,133.44

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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.