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Finding the Fourth Proportional to 478,264.40, 660,034.71 and 263,404.40

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Solution

The fourth proportional to 478,264.40, 660,034.71 and 263,404.40 is: 363,514.51

Step by Step Solution

  1. Step 1: Write the proportion equation
    478,264.40 : 660,034.71 = 263,404.40 : x
  2. Step 2: Convert to fraction form
    478,264.40/660,034.71 = 263,404.40/x
  3. Step 3: Cross multiply
    478,264.40x = 660,034.71 × 263,404.40
  4. Step 4: Simplify right side
    478,264.40x = 173,856,049,404.58
  5. Step 5: Solve for x
    x = 173,856,049,404.58/478,264.40
  6. Step 6: Final answer
    x = 363,514.51

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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.