Home / 278,779.97-384,724.23-157,921.22

Finding the Fourth Proportional to 278,779.97, 384,724.23 and 157,921.22

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Solution

The fourth proportional to 278,779.97, 384,724.23 and 157,921.22 is: 217,935.74

Step by Step Solution

  1. Step 1: Write the proportion equation
    278,779.97 : 384,724.23 = 157,921.22 : x
  2. Step 2: Convert to fraction form
    278,779.97/384,724.23 = 157,921.22/x
  3. Step 3: Cross multiply
    278,779.97x = 384,724.23 × 157,921.22
  4. Step 4: Simplify right side
    278,779.97x = 60,756,119,765.16
  5. Step 5: Solve for x
    x = 60,756,119,765.16/278,779.97
  6. Step 6: Final answer
    x = 217,935.74

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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.