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Finding the Fourth Proportional to 212,881.77, 319,544.09 and 156,785.22

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Solution

The fourth proportional to 212,881.77, 319,544.09 and 156,785.22 is: 235,340.91

Step by Step Solution

  1. Step 1: Write the proportion equation
    212,881.77 : 319,544.09 = 156,785.22 : x
  2. Step 2: Convert to fraction form
    212,881.77/319,544.09 = 156,785.22/x
  3. Step 3: Cross multiply
    212,881.77x = 319,544.09 × 156,785.22
  4. Step 4: Simplify right side
    212,881.77x = 50,099,790,254.37
  5. Step 5: Solve for x
    x = 50,099,790,254.37/212,881.77
  6. Step 6: Final answer
    x = 235,340.91

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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.