Home / 215,848.40-324,064.20-137,116.40

Finding the Fourth Proportional to 215,848.40, 324,064.20 and 137,116.40

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Solution

The fourth proportional to 215,848.40, 324,064.20 and 137,116.40 is: 205,859.84

Step by Step Solution

  1. Step 1: Write the proportion equation
    215,848.40 : 324,064.20 = 137,116.40 : x
  2. Step 2: Convert to fraction form
    215,848.40/324,064.20 = 137,116.40/x
  3. Step 3: Cross multiply
    215,848.40x = 324,064.20 × 137,116.40
  4. Step 4: Simplify right side
    215,848.40x = 44,434,516,472.88
  5. Step 5: Solve for x
    x = 44,434,516,472.88/215,848.40
  6. Step 6: Final answer
    x = 205,859.84

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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.