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Finding the Fourth Proportional to 330,328.59, 495,495.81 and 130,649

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Solution

The fourth proportional to 330,328.59, 495,495.81 and 130,649 is: 195,974.65

Step by Step Solution

  1. Step 1: Write the proportion equation
    330,328.59 : 495,495.81 = 130,649 : x
  2. Step 2: Convert to fraction form
    330,328.59/495,495.81 = 130,649/x
  3. Step 3: Cross multiply
    330,328.59x = 495,495.81 × 130,649
  4. Step 4: Simplify right side
    330,328.59x = 64,736,031,427.45
  5. Step 5: Solve for x
    x = 64,736,031,427.45/330,328.59
  6. Step 6: Final answer
    x = 195,974.65

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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.