Home / 328,110.10-492,165.15-221,821.90

Finding the Fourth Proportional to 328,110.10, 492,165.15 and 221,821.90

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Solution

The fourth proportional to 328,110.10, 492,165.15 and 221,821.90 is: 332,732.85

Step by Step Solution

  1. Step 1: Write the proportion equation
    328,110.10 : 492,165.15 = 221,821.90 : x
  2. Step 2: Convert to fraction form
    328,110.10/492,165.15 = 221,821.90/x
  3. Step 3: Cross multiply
    328,110.10x = 492,165.15 × 221,821.90
  4. Step 4: Simplify right side
    328,110.10x = 109,173,008,686.79
  5. Step 5: Solve for x
    x = 109,173,008,686.79/328,110.10
  6. Step 6: Final answer
    x = 332,732.85

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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.