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Finding the Fourth Proportional to 330,495.72, 495,775.80 and 105,799.56

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Solution

The fourth proportional to 330,495.72, 495,775.80 and 105,799.56 is: 158,709.65

Step by Step Solution

  1. Step 1: Write the proportion equation
    330,495.72 : 495,775.80 = 105,799.56 : x
  2. Step 2: Convert to fraction form
    330,495.72/495,775.80 = 105,799.56/x
  3. Step 3: Cross multiply
    330,495.72x = 495,775.80 × 105,799.56
  4. Step 4: Simplify right side
    330,495.72x = 52,452,861,498.65
  5. Step 5: Solve for x
    x = 52,452,861,498.65/330,495.72
  6. Step 6: Final answer
    x = 158,709.65

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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.