Home / 278,439.21-384,247.67-157,580.73

Finding the Fourth Proportional to 278,439.21, 384,247.67 and 157,580.73

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Solution

The fourth proportional to 278,439.21, 384,247.67 and 157,580.73 is: 217,462.29

Step by Step Solution

  1. Step 1: Write the proportion equation
    278,439.21 : 384,247.67 = 157,580.73 : x
  2. Step 2: Convert to fraction form
    278,439.21/384,247.67 = 157,580.73/x
  3. Step 3: Cross multiply
    278,439.21x = 384,247.67 × 157,580.73
  4. Step 4: Simplify right side
    278,439.21x = 60,550,027,551.50
  5. Step 5: Solve for x
    x = 60,550,027,551.50/278,439.21
  6. Step 6: Final answer
    x = 217,462.29

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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.