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Finding the Fourth Proportional to 247,383, 371,178.72 and 121,134.60

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Solution

The fourth proportional to 247,383, 371,178.72 and 121,134.60 is: 181,752.93

Step by Step Solution

  1. Step 1: Write the proportion equation
    247,383 : 371,178.72 = 121,134.60 : x
  2. Step 2: Convert to fraction form
    247,383/371,178.72 = 121,134.60/x
  3. Step 3: Cross multiply
    247,383x = 371,178.72 × 121,134.60
  4. Step 4: Simplify right side
    247,383x = 44,962,585,775.71
  5. Step 5: Solve for x
    x = 44,962,585,775.71/247,383
  6. Step 6: Final answer
    x = 181,752.93

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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.