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Finding the Fourth Proportional to 278,574.81, 383,744.61 and 237,605.47

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Solution

The fourth proportional to 278,574.81, 383,744.61 and 237,605.47 is: 327,308.19

Step by Step Solution

  1. Step 1: Write the proportion equation
    278,574.81 : 383,744.61 = 237,605.47 : x
  2. Step 2: Convert to fraction form
    278,574.81/383,744.61 = 237,605.47/x
  3. Step 3: Cross multiply
    278,574.81x = 383,744.61 × 237,605.47
  4. Step 4: Simplify right side
    278,574.81x = 91,179,818,538.94
  5. Step 5: Solve for x
    x = 91,179,818,538.94/278,574.81
  6. Step 6: Final answer
    x = 327,308.19

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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.