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Finding the Fourth Proportional to 478,260.30, 660,029.07 and 263,400.30

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Solution

The fourth proportional to 478,260.30, 660,029.07 and 263,400.30 is: 363,508.86

Step by Step Solution

  1. Step 1: Write the proportion equation
    478,260.30 : 660,029.07 = 263,400.30 : x
  2. Step 2: Convert to fraction form
    478,260.30/660,029.07 = 263,400.30/x
  3. Step 3: Cross multiply
    478,260.30x = 660,029.07 × 263,400.30
  4. Step 4: Simplify right side
    478,260.30x = 173,851,855,046.72
  5. Step 5: Solve for x
    x = 173,851,855,046.72/478,260.30
  6. Step 6: Final answer
    x = 363,508.86

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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.