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Finding the Fourth Proportional to 478,264.90, 660,035.41 and 263,404.91

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Solution

The fourth proportional to 478,264.90, 660,035.41 and 263,404.91 is: 363,515.21

Step by Step Solution

  1. Step 1: Write the proportion equation
    478,264.90 : 660,035.41 = 263,404.91 : x
  2. Step 2: Convert to fraction form
    478,264.90/660,035.41 = 263,404.91/x
  3. Step 3: Cross multiply
    478,264.90x = 660,035.41 × 263,404.91
  4. Step 4: Simplify right side
    478,264.90x = 173,856,563,150.66
  5. Step 5: Solve for x
    x = 173,856,563,150.66/478,264.90
  6. Step 6: Final answer
    x = 363,515.21

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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.