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Finding the Fourth Proportional to 273,212.30, 409,818.45 and 155,114.30

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Solution

The fourth proportional to 273,212.30, 409,818.45 and 155,114.30 is: 232,671.45

Step by Step Solution

  1. Step 1: Write the proportion equation
    273,212.30 : 409,818.45 = 155,114.30 : x
  2. Step 2: Convert to fraction form
    273,212.30/409,818.45 = 155,114.30/x
  3. Step 3: Cross multiply
    273,212.30x = 409,818.45 × 155,114.30
  4. Step 4: Simplify right side
    273,212.30x = 63,568,701,998.84
  5. Step 5: Solve for x
    x = 63,568,701,998.84/273,212.30
  6. Step 6: Final answer
    x = 232,671.45

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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.