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Finding the Fourth Proportional to 275,149.32, 379,725.54 and 152,681.76

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Solution

The fourth proportional to 275,149.32, 379,725.54 and 152,681.76 is: 210,711.64

Step by Step Solution

  1. Step 1: Write the proportion equation
    275,149.32 : 379,725.54 = 152,681.76 : x
  2. Step 2: Convert to fraction form
    275,149.32/379,725.54 = 152,681.76/x
  3. Step 3: Cross multiply
    275,149.32x = 379,725.54 × 152,681.76
  4. Step 4: Simplify right side
    275,149.32x = 57,977,163,764.15
  5. Step 5: Solve for x
    x = 57,977,163,764.15/275,149.32
  6. Step 6: Final answer
    x = 210,711.64

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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.