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Finding the Fourth Proportional to 330,649.17, 495,729.54 and 105,879.57

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Solution

The fourth proportional to 330,649.17, 495,729.54 and 105,879.57 is: 158,741.15

Step by Step Solution

  1. Step 1: Write the proportion equation
    330,649.17 : 495,729.54 = 105,879.57 : x
  2. Step 2: Convert to fraction form
    330,649.17/495,729.54 = 105,879.57/x
  3. Step 3: Cross multiply
    330,649.17x = 495,729.54 × 105,879.57
  4. Step 4: Simplify right side
    330,649.17x = 52,487,630,531.50
  5. Step 5: Solve for x
    x = 52,487,630,531.50/330,649.17
  6. Step 6: Final answer
    x = 158,741.15

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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.