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Finding the Fourth Proportional to 343,520.38, 474,062.79 and 257,326.66

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Solution

The fourth proportional to 343,520.38, 474,062.79 and 257,326.66 is: 355,114.29

Step by Step Solution

  1. Step 1: Write the proportion equation
    343,520.38 : 474,062.79 = 257,326.66 : x
  2. Step 2: Convert to fraction form
    343,520.38/474,062.79 = 257,326.66/x
  3. Step 3: Cross multiply
    343,520.38x = 474,062.79 × 257,326.66
  4. Step 4: Simplify right side
    343,520.38x = 121,988,994,380.98
  5. Step 5: Solve for x
    x = 121,988,994,380.98/343,520.38
  6. Step 6: Final answer
    x = 355,114.29

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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.