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Finding the Fourth Proportional to 273,175.20, 409,762.80 and 86,186.70

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Solution

The fourth proportional to 273,175.20, 409,762.80 and 86,186.70 is: 129,280.05

Step by Step Solution

  1. Step 1: Write the proportion equation
    273,175.20 : 409,762.80 = 86,186.70 : x
  2. Step 2: Convert to fraction form
    273,175.20/409,762.80 = 86,186.70/x
  3. Step 3: Cross multiply
    273,175.20x = 409,762.80 × 86,186.70
  4. Step 4: Simplify right side
    273,175.20x = 35,316,103,514.76
  5. Step 5: Solve for x
    x = 35,316,103,514.76/273,175.20
  6. Step 6: Final answer
    x = 129,280.05

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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.