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Finding the Fourth Proportional to 390,673.44, 538,943.04 and 227,329.92

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Solution

The fourth proportional to 390,673.44, 538,943.04 and 227,329.92 is: 313,606.88

Step by Step Solution

  1. Step 1: Write the proportion equation
    390,673.44 : 538,943.04 = 227,329.92 : x
  2. Step 2: Convert to fraction form
    390,673.44/538,943.04 = 227,329.92/x
  3. Step 3: Cross multiply
    390,673.44x = 538,943.04 × 227,329.92
  4. Step 4: Simplify right side
    390,673.44x = 122,517,878,167.76
  5. Step 5: Solve for x
    x = 122,517,878,167.76/390,673.44
  6. Step 6: Final answer
    x = 313,606.88

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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.