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Finding the Fourth Proportional to 456,581.88, 630,048.78 and 255,339

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Solution

The fourth proportional to 456,581.88, 630,048.78 and 255,339 is: 352,348.69

Step by Step Solution

  1. Step 1: Write the proportion equation
    456,581.88 : 630,048.78 = 255,339 : x
  2. Step 2: Convert to fraction form
    456,581.88/630,048.78 = 255,339/x
  3. Step 3: Cross multiply
    456,581.88x = 630,048.78 × 255,339
  4. Step 4: Simplify right side
    456,581.88x = 160,876,025,436.42
  5. Step 5: Solve for x
    x = 160,876,025,436.42/456,581.88
  6. Step 6: Final answer
    x = 352,348.69

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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.