Home / 215,036.64-322,559.40-78,255.06

Finding the Fourth Proportional to 215,036.64, 322,559.40 and 78,255.06

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Solution

The fourth proportional to 215,036.64, 322,559.40 and 78,255.06 is: 117,384.21

Step by Step Solution

  1. Step 1: Write the proportion equation
    215,036.64 : 322,559.40 = 78,255.06 : x
  2. Step 2: Convert to fraction form
    215,036.64/322,559.40 = 78,255.06/x
  3. Step 3: Cross multiply
    215,036.64x = 322,559.40 × 78,255.06
  4. Step 4: Simplify right side
    215,036.64x = 25,241,905,200.56
  5. Step 5: Solve for x
    x = 25,241,905,200.56/215,036.64
  6. Step 6: Final answer
    x = 117,384.21

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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.