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Finding the Fourth Proportional to 247,917.40, 372,221.70 and 154,605.40

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Solution

The fourth proportional to 247,917.40, 372,221.70 and 154,605.40 is: 232,123.62

Step by Step Solution

  1. Step 1: Write the proportion equation
    247,917.40 : 372,221.70 = 154,605.40 : x
  2. Step 2: Convert to fraction form
    247,917.40/372,221.70 = 154,605.40/x
  3. Step 3: Cross multiply
    247,917.40x = 372,221.70 × 154,605.40
  4. Step 4: Simplify right side
    247,917.40x = 57,547,484,817.18
  5. Step 5: Solve for x
    x = 57,547,484,817.18/247,917.40
  6. Step 6: Final answer
    x = 232,123.62

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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.