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Finding the Fourth Proportional to 210,165.29, 315,250.68 and 69,923.91

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Solution

The fourth proportional to 210,165.29, 315,250.68 and 69,923.91 is: 104,886.78

Step by Step Solution

  1. Step 1: Write the proportion equation
    210,165.29 : 315,250.68 = 69,923.91 : x
  2. Step 2: Convert to fraction form
    210,165.29/315,250.68 = 69,923.91/x
  3. Step 3: Cross multiply
    210,165.29x = 315,250.68 × 69,923.91
  4. Step 4: Simplify right side
    210,165.29x = 22,043,560,175.76
  5. Step 5: Solve for x
    x = 22,043,560,175.76/210,165.29
  6. Step 6: Final answer
    x = 104,886.78

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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.