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Finding the Fourth Proportional to 212,925, 318,723.16 and 156,828.44

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Solution

The fourth proportional to 212,925, 318,723.16 and 156,828.44 is: 234,753.34

Step by Step Solution

  1. Step 1: Write the proportion equation
    212,925 : 318,723.16 = 156,828.44 : x
  2. Step 2: Convert to fraction form
    212,925/318,723.16 = 156,828.44/x
  3. Step 3: Cross multiply
    212,925x = 318,723.16 × 156,828.44
  4. Step 4: Simplify right side
    212,925x = 49,984,855,974.67
  5. Step 5: Solve for x
    x = 49,984,855,974.67/212,925
  6. Step 6: Final answer
    x = 234,753.34

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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.