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Finding the Fourth Proportional to 485,031.95, 669,300.67 and 270,167.40

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Solution

The fourth proportional to 485,031.95, 669,300.67 and 270,167.40 is: 372,806.83

Step by Step Solution

  1. Step 1: Write the proportion equation
    485,031.95 : 669,300.67 = 270,167.40 : x
  2. Step 2: Convert to fraction form
    485,031.95/669,300.67 = 270,167.40/x
  3. Step 3: Cross multiply
    485,031.95x = 669,300.67 × 270,167.40
  4. Step 4: Simplify right side
    485,031.95x = 180,823,222,169.87
  5. Step 5: Solve for x
    x = 180,823,222,169.87/485,031.95
  6. Step 6: Final answer
    x = 372,806.83

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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.