Home / 215,547.40-323,321.10-131,566.60

Finding the Fourth Proportional to 215,547.40, 323,321.10 and 131,566.60

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Solution

The fourth proportional to 215,547.40, 323,321.10 and 131,566.60 is: 197,349.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    215,547.40 : 323,321.10 = 131,566.60 : x
  2. Step 2: Convert to fraction form
    215,547.40/323,321.10 = 131,566.60/x
  3. Step 3: Cross multiply
    215,547.40x = 323,321.10 × 131,566.60
  4. Step 4: Simplify right side
    215,547.40x = 42,538,257,835.26
  5. Step 5: Solve for x
    x = 42,538,257,835.26/215,547.40
  6. Step 6: Final answer
    x = 197,349.90

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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.