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Finding the Fourth Proportional to 274,741.52, 379,117.80 and 155,509.52

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Solution

The fourth proportional to 274,741.52, 379,117.80 and 155,509.52 is: 214,588.71

Step by Step Solution

  1. Step 1: Write the proportion equation
    274,741.52 : 379,117.80 = 155,509.52 : x
  2. Step 2: Convert to fraction form
    274,741.52/379,117.80 = 155,509.52/x
  3. Step 3: Cross multiply
    274,741.52x = 379,117.80 × 155,509.52
  4. Step 4: Simplify right side
    274,741.52x = 58,956,427,101.46
  5. Step 5: Solve for x
    x = 58,956,427,101.46/274,741.52
  6. Step 6: Final answer
    x = 214,588.71

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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.