Home / 215,999.90-323,769.45-82,828.70

Finding the Fourth Proportional to 215,999.90, 323,769.45 and 82,828.70

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Solution

The fourth proportional to 215,999.90, 323,769.45 and 82,828.70 is: 124,154.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    215,999.90 : 323,769.45 = 82,828.70 : x
  2. Step 2: Convert to fraction form
    215,999.90/323,769.45 = 82,828.70/x
  3. Step 3: Cross multiply
    215,999.90x = 323,769.45 × 82,828.70
  4. Step 4: Simplify right side
    215,999.90x = 26,817,402,643.22
  5. Step 5: Solve for x
    x = 26,817,402,643.22/215,999.90
  6. Step 6: Final answer
    x = 124,154.70

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1.5x scale

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.