Home / 212,581.16-318,890.08-54,808.28

Finding the Fourth Proportional to 212,581.16, 318,890.08 and 54,808.28

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Solution

The fourth proportional to 212,581.16, 318,890.08 and 54,808.28 is: 82,217.15

Step by Step Solution

  1. Step 1: Write the proportion equation
    212,581.16 : 318,890.08 = 54,808.28 : x
  2. Step 2: Convert to fraction form
    212,581.16/318,890.08 = 54,808.28/x
  3. Step 3: Cross multiply
    212,581.16x = 318,890.08 × 54,808.28
  4. Step 4: Simplify right side
    212,581.16x = 17,477,816,793.86
  5. Step 5: Solve for x
    x = 17,477,816,793.86/212,581.16
  6. Step 6: Final answer
    x = 82,217.15

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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.