Home / 287,236.32-431,051.30-100,247.82

Finding the Fourth Proportional to 287,236.32, 431,051.30 and 100,247.82

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Solution

The fourth proportional to 287,236.32, 431,051.30 and 100,247.82 is: 150,440.42

Step by Step Solution

  1. Step 1: Write the proportion equation
    287,236.32 : 431,051.30 = 100,247.82 : x
  2. Step 2: Convert to fraction form
    287,236.32/431,051.30 = 100,247.82/x
  3. Step 3: Cross multiply
    287,236.32x = 431,051.30 × 100,247.82
  4. Step 4: Simplify right side
    287,236.32x = 43,211,952,631.93
  5. Step 5: Solve for x
    x = 43,211,952,631.93/287,236.32
  6. Step 6: Final answer
    x = 150,440.42

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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.