Home / 278,764.04-384,704.16-157,908.80

Finding the Fourth Proportional to 278,764.04, 384,704.16 and 157,908.80

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Solution

The fourth proportional to 278,764.04, 384,704.16 and 157,908.80 is: 217,919.69

Step by Step Solution

  1. Step 1: Write the proportion equation
    278,764.04 : 384,704.16 = 157,908.80 : x
  2. Step 2: Convert to fraction form
    278,764.04/384,704.16 = 157,908.80/x
  3. Step 3: Cross multiply
    278,764.04x = 384,704.16 × 157,908.80
  4. Step 4: Simplify right side
    278,764.04x = 60,748,172,260.61
  5. Step 5: Solve for x
    x = 60,748,172,260.61/278,764.04
  6. Step 6: Final answer
    x = 217,919.69

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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.