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Finding the Fourth Proportional to 478,974.90, 660,989.97 and 264,122.58

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Solution

The fourth proportional to 478,974.90, 660,989.97 and 264,122.58 is: 364,491.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    478,974.90 : 660,989.97 = 264,122.58 : x
  2. Step 2: Convert to fraction form
    478,974.90/660,989.97 = 264,122.58/x
  3. Step 3: Cross multiply
    478,974.90x = 660,989.97 × 264,122.58
  4. Step 4: Simplify right side
    478,974.90x = 174,582,376,230.52
  5. Step 5: Solve for x
    x = 174,582,376,230.52/478,974.90
  6. Step 6: Final answer
    x = 364,491.70

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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.