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Finding the Fourth Proportional to 225,897.81, 337,001.25 and 209,790.56

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Solution

The fourth proportional to 225,897.81, 337,001.25 and 209,790.56 is: 312,971.95

Step by Step Solution

  1. Step 1: Write the proportion equation
    225,897.81 : 337,001.25 = 209,790.56 : x
  2. Step 2: Convert to fraction form
    225,897.81/337,001.25 = 209,790.56/x
  3. Step 3: Cross multiply
    225,897.81x = 337,001.25 × 209,790.56
  4. Step 4: Simplify right side
    225,897.81x = 70,699,679,216.70
  5. Step 5: Solve for x
    x = 70,699,679,216.70/225,897.81
  6. Step 6: Final answer
    x = 312,971.95

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Why These Related Problems?

These problems maintain the same ratio (1.49) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.