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Finding the Fourth Proportional to 353,663.29, 486,974.56 and 266,574.92

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Solution

The fourth proportional to 353,663.29, 486,974.56 and 266,574.92 is: 367,058.75

Step by Step Solution

  1. Step 1: Write the proportion equation
    353,663.29 : 486,974.56 = 266,574.92 : x
  2. Step 2: Convert to fraction form
    353,663.29/486,974.56 = 266,574.92/x
  3. Step 3: Cross multiply
    353,663.29x = 486,974.56 × 266,574.92
  4. Step 4: Simplify right side
    353,663.29x = 129,815,205,131.66
  5. Step 5: Solve for x
    x = 129,815,205,131.66/353,663.29
  6. Step 6: Final answer
    x = 367,058.75

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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.