Home / 278,708.49-384,622.79-157,874.85

Finding the Fourth Proportional to 278,708.49, 384,622.79 and 157,874.85

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Solution

The fourth proportional to 278,708.49, 384,622.79 and 157,874.85 is: 217,870.16

Step by Step Solution

  1. Step 1: Write the proportion equation
    278,708.49 : 384,622.79 = 157,874.85 : x
  2. Step 2: Convert to fraction form
    278,708.49/384,622.79 = 157,874.85/x
  3. Step 3: Cross multiply
    278,708.49x = 384,622.79 × 157,874.85
  4. Step 4: Simplify right side
    278,708.49x = 60,722,264,488.46
  5. Step 5: Solve for x
    x = 60,722,264,488.46/278,708.49
  6. Step 6: Final answer
    x = 217,870.16

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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.