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Finding the Fourth Proportional to 279,962.73, 386,225.72 and 189,285.76

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Solution

The fourth proportional to 279,962.73, 386,225.72 and 189,285.76 is: 261,131.29

Step by Step Solution

  1. Step 1: Write the proportion equation
    279,962.73 : 386,225.72 = 189,285.76 : x
  2. Step 2: Convert to fraction form
    279,962.73/386,225.72 = 189,285.76/x
  3. Step 3: Cross multiply
    279,962.73x = 386,225.72 × 189,285.76
  4. Step 4: Simplify right side
    279,962.73x = 73,107,029,187.92
  5. Step 5: Solve for x
    x = 73,107,029,187.92/279,962.73
  6. Step 6: Final answer
    x = 261,131.29

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1.5x scale

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.