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Finding the Fourth Proportional to 318,351.66, 477,426 and 105,079.98

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Solution

The fourth proportional to 318,351.66, 477,426 and 105,079.98 is: 157,586.47

Step by Step Solution

  1. Step 1: Write the proportion equation
    318,351.66 : 477,426 = 105,079.98 : x
  2. Step 2: Convert to fraction form
    318,351.66/477,426 = 105,079.98/x
  3. Step 3: Cross multiply
    318,351.66x = 477,426 × 105,079.98
  4. Step 4: Simplify right side
    318,351.66x = 50,167,914,531.48
  5. Step 5: Solve for x
    x = 50,167,914,531.48/318,351.66
  6. Step 6: Final answer
    x = 157,586.47

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.