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Finding the Fourth Proportional to 278,073.65, 383,744.65 and 163,357.12

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Solution

The fourth proportional to 278,073.65, 383,744.65 and 163,357.12 is: 225,434.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    278,073.65 : 383,744.65 = 163,357.12 : x
  2. Step 2: Convert to fraction form
    278,073.65/383,744.65 = 163,357.12/x
  3. Step 3: Cross multiply
    278,073.65x = 383,744.65 × 163,357.12
  4. Step 4: Simplify right side
    278,073.65x = 62,687,422,256.17
  5. Step 5: Solve for x
    x = 62,687,422,256.17/278,073.65
  6. Step 6: Final answer
    x = 225,434.60

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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.