Home / 215,947.40-323,690.70-82,776.20

Finding the Fourth Proportional to 215,947.40, 323,690.70 and 82,776.20

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Solution

The fourth proportional to 215,947.40, 323,690.70 and 82,776.20 is: 124,075.98

Step by Step Solution

  1. Step 1: Write the proportion equation
    215,947.40 : 323,690.70 = 82,776.20 : x
  2. Step 2: Convert to fraction form
    215,947.40/323,690.70 = 82,776.20/x
  3. Step 3: Cross multiply
    215,947.40x = 323,690.70 × 82,776.20
  4. Step 4: Simplify right side
    215,947.40x = 26,793,886,121.34
  5. Step 5: Solve for x
    x = 26,793,886,121.34/215,947.40
  6. Step 6: Final answer
    x = 124,075.98

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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.