Home / 252,971.56-379,807.26-128,400.04

Finding the Fourth Proportional to 252,971.56, 379,807.26 and 128,400.04

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Solution

The fourth proportional to 252,971.56, 379,807.26 and 128,400.04 is: 192,777.67

Step by Step Solution

  1. Step 1: Write the proportion equation
    252,971.56 : 379,807.26 = 128,400.04 : x
  2. Step 2: Convert to fraction form
    252,971.56/379,807.26 = 128,400.04/x
  3. Step 3: Cross multiply
    252,971.56x = 379,807.26 × 128,400.04
  4. Step 4: Simplify right side
    252,971.56x = 48,767,267,376.29
  5. Step 5: Solve for x
    x = 48,767,267,376.29/252,971.56
  6. Step 6: Final answer
    x = 192,777.67

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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.