Home / 278,381.18-384,166.37-157,520.04

Finding the Fourth Proportional to 278,381.18, 384,166.37 and 157,520.04

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Solution

The fourth proportional to 278,381.18, 384,166.37 and 157,520.04 is: 217,377.85

Step by Step Solution

  1. Step 1: Write the proportion equation
    278,381.18 : 384,166.37 = 157,520.04 : x
  2. Step 2: Convert to fraction form
    278,381.18/384,166.37 = 157,520.04/x
  3. Step 3: Cross multiply
    278,381.18x = 384,166.37 × 157,520.04
  4. Step 4: Simplify right side
    278,381.18x = 60,513,902,640.14
  5. Step 5: Solve for x
    x = 60,513,902,640.14/278,381.18
  6. Step 6: Final answer
    x = 217,377.85

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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.