Home / 318,089.80-438,956.62-172,892.17

Finding the Fourth Proportional to 318,089.80, 438,956.62 and 172,892.17

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Solution

The fourth proportional to 318,089.80, 438,956.62 and 172,892.17 is: 238,587.22

Step by Step Solution

  1. Step 1: Write the proportion equation
    318,089.80 : 438,956.62 = 172,892.17 : x
  2. Step 2: Convert to fraction form
    318,089.80/438,956.62 = 172,892.17/x
  3. Step 3: Cross multiply
    318,089.80x = 438,956.62 × 172,892.17
  4. Step 4: Simplify right side
    318,089.80x = 75,892,162,567.67
  5. Step 5: Solve for x
    x = 75,892,162,567.67/318,089.80
  6. Step 6: Final answer
    x = 238,587.22

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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.