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Finding the Fourth Proportional to 253,658.07, 349,251.48 and 215,338.23

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Solution

The fourth proportional to 253,658.07, 349,251.48 and 215,338.23 is: 296,490.45

Step by Step Solution

  1. Step 1: Write the proportion equation
    253,658.07 : 349,251.48 = 215,338.23 : x
  2. Step 2: Convert to fraction form
    253,658.07/349,251.48 = 215,338.23/x
  3. Step 3: Cross multiply
    253,658.07x = 349,251.48 × 215,338.23
  4. Step 4: Simplify right side
    253,658.07x = 75,207,195,528.08
  5. Step 5: Solve for x
    x = 75,207,195,528.08/253,658.07
  6. Step 6: Final answer
    x = 296,490.45

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Double scale
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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.