Home / 330,488.20-456,072.51-187,275.61

Finding the Fourth Proportional to 330,488.20, 456,072.51 and 187,275.61

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Solution

The fourth proportional to 330,488.20, 456,072.51 and 187,275.61 is: 258,439.66

Step by Step Solution

  1. Step 1: Write the proportion equation
    330,488.20 : 456,072.51 = 187,275.61 : x
  2. Step 2: Convert to fraction form
    330,488.20/456,072.51 = 187,275.61/x
  3. Step 3: Cross multiply
    330,488.20x = 456,072.51 × 187,275.61
  4. Step 4: Simplify right side
    330,488.20x = 85,411,257,514.48
  5. Step 5: Solve for x
    x = 85,411,257,514.48/330,488.20
  6. Step 6: Final answer
    x = 258,439.66

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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.