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Finding the Fourth Proportional to 330,228.42, 495,342.66 and 130,642.80

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Solution

The fourth proportional to 330,228.42, 495,342.66 and 130,642.80 is: 195,964.21

Step by Step Solution

  1. Step 1: Write the proportion equation
    330,228.42 : 495,342.66 = 130,642.80 : x
  2. Step 2: Convert to fraction form
    330,228.42/495,342.66 = 130,642.80/x
  3. Step 3: Cross multiply
    330,228.42x = 495,342.66 × 130,642.80
  4. Step 4: Simplify right side
    330,228.42x = 64,712,952,061.85
  5. Step 5: Solve for x
    x = 64,712,952,061.85/330,228.42
  6. Step 6: Final answer
    x = 195,964.21

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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.