Home / 318,122.28-439,017.15-172,937.83

Finding the Fourth Proportional to 318,122.28, 439,017.15 and 172,937.83

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Solution

The fourth proportional to 318,122.28, 439,017.15 and 172,937.83 is: 238,658.77

Step by Step Solution

  1. Step 1: Write the proportion equation
    318,122.28 : 439,017.15 = 172,937.83 : x
  2. Step 2: Convert to fraction form
    318,122.28/439,017.15 = 172,937.83/x
  3. Step 3: Cross multiply
    318,122.28x = 439,017.15 × 172,937.83
  4. Step 4: Simplify right side
    318,122.28x = 75,922,672,389.10
  5. Step 5: Solve for x
    x = 75,922,672,389.10/318,122.28
  6. Step 6: Final answer
    x = 238,658.77

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.