Home / 389,049.49-537,331.17-261,503.65

Finding the Fourth Proportional to 389,049.49, 537,331.17 and 261,503.65

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Solution

The fourth proportional to 389,049.49, 537,331.17 and 261,503.65 is: 361,172.72

Step by Step Solution

  1. Step 1: Write the proportion equation
    389,049.49 : 537,331.17 = 261,503.65 : x
  2. Step 2: Convert to fraction form
    389,049.49/537,331.17 = 261,503.65/x
  3. Step 3: Cross multiply
    389,049.49x = 537,331.17 × 261,503.65
  4. Step 4: Simplify right side
    389,049.49x = 140,514,062,213.77
  5. Step 5: Solve for x
    x = 140,514,062,213.77/389,049.49
  6. Step 6: Final answer
    x = 361,172.72

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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.