Home / 278,124.18-383,795.25-157,290.81

Finding the Fourth Proportional to 278,124.18, 383,795.25 and 157,290.81

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Solution

The fourth proportional to 278,124.18, 383,795.25 and 157,290.81 is: 217,052.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    278,124.18 : 383,795.25 = 157,290.81 : x
  2. Step 2: Convert to fraction form
    278,124.18/383,795.25 = 157,290.81/x
  3. Step 3: Cross multiply
    278,124.18x = 383,795.25 × 157,290.81
  4. Step 4: Simplify right side
    278,124.18x = 60,367,465,746.65
  5. Step 5: Solve for x
    x = 60,367,465,746.65/278,124.18
  6. Step 6: Final answer
    x = 217,052.20

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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.