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Finding the Fourth Proportional to 287,235.57, 431,050.17 and 100,247.07

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Solution

The fourth proportional to 287,235.57, 431,050.17 and 100,247.07 is: 150,439.29

Step by Step Solution

  1. Step 1: Write the proportion equation
    287,235.57 : 431,050.17 = 100,247.07 : x
  2. Step 2: Convert to fraction form
    287,235.57/431,050.17 = 100,247.07/x
  3. Step 3: Cross multiply
    287,235.57x = 431,050.17 × 100,247.07
  4. Step 4: Simplify right side
    287,235.57x = 43,211,516,565.50
  5. Step 5: Solve for x
    x = 43,211,516,565.50/287,235.57
  6. Step 6: Final answer
    x = 150,439.29

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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.