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Finding the Fourth Proportional to 372,665.84, 514,270.78 and 217,643.80

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Solution

The fourth proportional to 372,665.84, 514,270.78 and 217,643.80 is: 300,343.73

Step by Step Solution

  1. Step 1: Write the proportion equation
    372,665.84 : 514,270.78 = 217,643.80 : x
  2. Step 2: Convert to fraction form
    372,665.84/514,270.78 = 217,643.80/x
  3. Step 3: Cross multiply
    372,665.84x = 514,270.78 × 217,643.80
  4. Step 4: Simplify right side
    372,665.84x = 111,927,846,788.16
  5. Step 5: Solve for x
    x = 111,927,846,788.16/372,665.84
  6. Step 6: Final answer
    x = 300,343.73

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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.