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Finding the Fourth Proportional to 342,951.18, 473,396.85 and 279,178.26

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Solution

The fourth proportional to 342,951.18, 473,396.85 and 279,178.26 is: 385,367.12

Step by Step Solution

  1. Step 1: Write the proportion equation
    342,951.18 : 473,396.85 = 279,178.26 : x
  2. Step 2: Convert to fraction form
    342,951.18/473,396.85 = 279,178.26/x
  3. Step 3: Cross multiply
    342,951.18x = 473,396.85 × 279,178.26
  4. Step 4: Simplify right side
    342,951.18x = 132,162,108,872.48
  5. Step 5: Solve for x
    x = 132,162,108,872.48/342,951.18
  6. Step 6: Final answer
    x = 385,367.12

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.