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Finding the Fourth Proportional to 253,612.80, 349,934.40 and 140,414.40

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Solution

The fourth proportional to 253,612.80, 349,934.40 and 140,414.40 is: 193,743.49

Step by Step Solution

  1. Step 1: Write the proportion equation
    253,612.80 : 349,934.40 = 140,414.40 : x
  2. Step 2: Convert to fraction form
    253,612.80/349,934.40 = 140,414.40/x
  3. Step 3: Cross multiply
    253,612.80x = 349,934.40 × 140,414.40
  4. Step 4: Simplify right side
    253,612.80x = 49,135,828,815.36
  5. Step 5: Solve for x
    x = 49,135,828,815.36/253,612.80
  6. Step 6: Final answer
    x = 193,743.49

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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.