Home / 287,236.08-431,050.92-100,247.58

Finding the Fourth Proportional to 287,236.08, 431,050.92 and 100,247.58

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Solution

The fourth proportional to 287,236.08, 431,050.92 and 100,247.58 is: 150,440.05

Step by Step Solution

  1. Step 1: Write the proportion equation
    287,236.08 : 431,050.92 = 100,247.58 : x
  2. Step 2: Convert to fraction form
    287,236.08/431,050.92 = 100,247.58/x
  3. Step 3: Cross multiply
    287,236.08x = 431,050.92 × 100,247.58
  4. Step 4: Simplify right side
    287,236.08x = 43,211,811,586.77
  5. Step 5: Solve for x
    x = 43,211,811,586.77/287,236.08
  6. Step 6: Final answer
    x = 150,440.05

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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.