Home / 398,631.40-597,947.10-208,832.20

Finding the Fourth Proportional to 398,631.40, 597,947.10 and 208,832.20

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Solution

The fourth proportional to 398,631.40, 597,947.10 and 208,832.20 is: 313,248.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    398,631.40 : 597,947.10 = 208,832.20 : x
  2. Step 2: Convert to fraction form
    398,631.40/597,947.10 = 208,832.20/x
  3. Step 3: Cross multiply
    398,631.40x = 597,947.10 × 208,832.20
  4. Step 4: Simplify right side
    398,631.40x = 124,870,608,376.62
  5. Step 5: Solve for x
    x = 124,870,608,376.62/398,631.40
  6. Step 6: Final answer
    x = 313,248.30

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.