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Finding the Fourth Proportional to 375,637.79, 518,287.16 and 222,711.82

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Solution

The fourth proportional to 375,637.79, 518,287.16 and 222,711.82 is: 307,287.17

Step by Step Solution

  1. Step 1: Write the proportion equation
    375,637.79 : 518,287.16 = 222,711.82 : x
  2. Step 2: Convert to fraction form
    375,637.79/518,287.16 = 222,711.82/x
  3. Step 3: Cross multiply
    375,637.79x = 518,287.16 × 222,711.82
  4. Step 4: Simplify right side
    375,637.79x = 115,428,675,947.29
  5. Step 5: Solve for x
    x = 115,428,675,947.29/375,637.79
  6. Step 6: Final answer
    x = 307,287.17

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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.