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Finding the Fourth Proportional to 257,034.05, 354,073.19 and 218,670.71

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Solution

The fourth proportional to 257,034.05, 354,073.19 and 218,670.71 is: 301,226.38

Step by Step Solution

  1. Step 1: Write the proportion equation
    257,034.05 : 354,073.19 = 218,670.71 : x
  2. Step 2: Convert to fraction form
    257,034.05/354,073.19 = 218,670.71/x
  3. Step 3: Cross multiply
    257,034.05x = 354,073.19 × 218,670.71
  4. Step 4: Simplify right side
    257,034.05x = 77,425,435,849.26
  5. Step 5: Solve for x
    x = 77,425,435,849.26/257,034.05
  6. Step 6: Final answer
    x = 301,226.38

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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.