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Finding the Fourth Proportional to 330,130.78, 495,228.98 and 119,785.12

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Solution

The fourth proportional to 330,130.78, 495,228.98 and 119,785.12 is: 179,689.58

Step by Step Solution

  1. Step 1: Write the proportion equation
    330,130.78 : 495,228.98 = 119,785.12 : x
  2. Step 2: Convert to fraction form
    330,130.78/495,228.98 = 119,785.12/x
  3. Step 3: Cross multiply
    330,130.78x = 495,228.98 × 119,785.12
  4. Step 4: Simplify right side
    330,130.78x = 59,321,061,858.17
  5. Step 5: Solve for x
    x = 59,321,061,858.17/330,130.78
  6. Step 6: Final answer
    x = 179,689.58

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1.5x scale

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.