Home / 278,830.56-384,785.52-157,971.60

Finding the Fourth Proportional to 278,830.56, 384,785.52 and 157,971.60

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Solution

The fourth proportional to 278,830.56, 384,785.52 and 157,971.60 is: 218,000.44

Step by Step Solution

  1. Step 1: Write the proportion equation
    278,830.56 : 384,785.52 = 157,971.60 : x
  2. Step 2: Convert to fraction form
    278,830.56/384,785.52 = 157,971.60/x
  3. Step 3: Cross multiply
    278,830.56x = 384,785.52 × 157,971.60
  4. Step 4: Simplify right side
    278,830.56x = 60,785,184,251.23
  5. Step 5: Solve for x
    x = 60,785,184,251.23/278,830.56
  6. Step 6: Final answer
    x = 218,000.44

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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.