Home / 278,789.24-384,748.19-157,931.52

Finding the Fourth Proportional to 278,789.24, 384,748.19 and 157,931.52

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Solution

The fourth proportional to 278,789.24, 384,748.19 and 157,931.52 is: 217,956.28

Step by Step Solution

  1. Step 1: Write the proportion equation
    278,789.24 : 384,748.19 = 157,931.52 : x
  2. Step 2: Convert to fraction form
    278,789.24/384,748.19 = 157,931.52/x
  3. Step 3: Cross multiply
    278,789.24x = 384,748.19 × 157,931.52
  4. Step 4: Simplify right side
    278,789.24x = 60,763,866,463.95
  5. Step 5: Solve for x
    x = 60,763,866,463.95/278,789.24
  6. Step 6: Final answer
    x = 217,956.28

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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.