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Finding the Fourth Proportional to 200,048.61, 300,230.67 and 87,806.30

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Solution

The fourth proportional to 200,048.61, 300,230.67 and 87,806.30 is: 131,778.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    200,048.61 : 300,230.67 = 87,806.30 : x
  2. Step 2: Convert to fraction form
    200,048.61/300,230.67 = 87,806.30/x
  3. Step 3: Cross multiply
    200,048.61x = 300,230.67 × 87,806.30
  4. Step 4: Simplify right side
    200,048.61x = 26,362,145,146.63
  5. Step 5: Solve for x
    x = 26,362,145,146.63/200,048.61
  6. Step 6: Final answer
    x = 131,778.70

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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.