Home / 212,287.07-318,337.11-112,423.92

Finding the Fourth Proportional to 212,287.07, 318,337.11 and 112,423.92

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Solution

The fourth proportional to 212,287.07, 318,337.11 and 112,423.92 is: 168,586.37

Step by Step Solution

  1. Step 1: Write the proportion equation
    212,287.07 : 318,337.11 = 112,423.92 : x
  2. Step 2: Convert to fraction form
    212,287.07/318,337.11 = 112,423.92/x
  3. Step 3: Cross multiply
    212,287.07x = 318,337.11 × 112,423.92
  4. Step 4: Simplify right side
    212,287.07x = 35,788,705,787.67
  5. Step 5: Solve for x
    x = 35,788,705,787.67/212,287.07
  6. Step 6: Final answer
    x = 168,586.37

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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.