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Finding the Fourth Proportional to 618,387, 927,580.50 and 151,443

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Solution

The fourth proportional to 618,387, 927,580.50 and 151,443 is: 227,164.50

Step by Step Solution

  1. Step 1: Write the proportion equation
    618,387 : 927,580.50 = 151,443 : x
  2. Step 2: Convert to fraction form
    618,387/927,580.50 = 151,443/x
  3. Step 3: Cross multiply
    618,387x = 927,580.50 × 151,443
  4. Step 4: Simplify right side
    618,387x = 140,475,573,661.50
  5. Step 5: Solve for x
    x = 140,475,573,661.50/618,387
  6. Step 6: Final answer
    x = 227,164.50

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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.