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Finding the Fourth Proportional to 308,301.75, 425,338.29 and 187,398.93

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Solution

The fourth proportional to 308,301.75, 425,338.29 and 187,398.93 is: 258,538.72

Step by Step Solution

  1. Step 1: Write the proportion equation
    308,301.75 : 425,338.29 = 187,398.93 : x
  2. Step 2: Convert to fraction form
    308,301.75/425,338.29 = 187,398.93/x
  3. Step 3: Cross multiply
    308,301.75x = 425,338.29 × 187,398.93
  4. Step 4: Simplify right side
    308,301.75x = 79,707,940,434.03
  5. Step 5: Solve for x
    x = 79,707,940,434.03/308,301.75
  6. Step 6: Final answer
    x = 258,538.72

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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.