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Finding the Fourth Proportional to 330,073.71, 495,318.99 and 140,534.16

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Solution

The fourth proportional to 330,073.71, 495,318.99 and 140,534.16 is: 210,889.98

Step by Step Solution

  1. Step 1: Write the proportion equation
    330,073.71 : 495,318.99 = 140,534.16 : x
  2. Step 2: Convert to fraction form
    330,073.71/495,318.99 = 140,534.16/x
  3. Step 3: Cross multiply
    330,073.71x = 495,318.99 × 140,534.16
  4. Step 4: Simplify right side
    330,073.71x = 69,609,238,191.70
  5. Step 5: Solve for x
    x = 69,609,238,191.70/330,073.71
  6. Step 6: Final answer
    x = 210,889.98

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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.