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Finding the Fourth Proportional to 270,143.57, 372,799.28 and 147,638.45

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Solution

The fourth proportional to 270,143.57, 372,799.28 and 147,638.45 is: 203,741.69

Step by Step Solution

  1. Step 1: Write the proportion equation
    270,143.57 : 372,799.28 = 147,638.45 : x
  2. Step 2: Convert to fraction form
    270,143.57/372,799.28 = 147,638.45/x
  3. Step 3: Cross multiply
    270,143.57x = 372,799.28 × 147,638.45
  4. Step 4: Simplify right side
    270,143.57x = 55,039,509,161.41
  5. Step 5: Solve for x
    x = 55,039,509,161.41/270,143.57
  6. Step 6: Final answer
    x = 203,741.69

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.