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Finding the Fourth Proportional to 478,786.18, 660,695.25 and 263,915.14

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Solution

The fourth proportional to 478,786.18, 660,695.25 and 263,915.14 is: 364,186.53

Step by Step Solution

  1. Step 1: Write the proportion equation
    478,786.18 : 660,695.25 = 263,915.14 : x
  2. Step 2: Convert to fraction form
    478,786.18/660,695.25 = 263,915.14/x
  3. Step 3: Cross multiply
    478,786.18x = 660,695.25 × 263,915.14
  4. Step 4: Simplify right side
    478,786.18x = 174,367,479,401.09
  5. Step 5: Solve for x
    x = 174,367,479,401.09/478,786.18
  6. Step 6: Final answer
    x = 364,186.53

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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.