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Finding the Fourth Proportional to 212,382.77, 318,661.65 and 156,504.92

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Solution

The fourth proportional to 212,382.77, 318,661.65 and 156,504.92 is: 234,821.85

Step by Step Solution

  1. Step 1: Write the proportion equation
    212,382.77 : 318,661.65 = 156,504.92 : x
  2. Step 2: Convert to fraction form
    212,382.77/318,661.65 = 156,504.92/x
  3. Step 3: Cross multiply
    212,382.77x = 318,661.65 × 156,504.92
  4. Step 4: Simplify right side
    212,382.77x = 49,872,114,447.01
  5. Step 5: Solve for x
    x = 49,872,114,447.01/212,382.77
  6. Step 6: Final answer
    x = 234,821.85

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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.