Home / 356,133.28-491,464-194,988.36

Finding the Fourth Proportional to 356,133.28, 491,464 and 194,988.36

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Solution

The fourth proportional to 356,133.28, 491,464 and 194,988.36 is: 269,083.98

Step by Step Solution

  1. Step 1: Write the proportion equation
    356,133.28 : 491,464 = 194,988.36 : x
  2. Step 2: Convert to fraction form
    356,133.28/491,464 = 194,988.36/x
  3. Step 3: Cross multiply
    356,133.28x = 491,464 × 194,988.36
  4. Step 4: Simplify right side
    356,133.28x = 95,829,759,359.04
  5. Step 5: Solve for x
    x = 95,829,759,359.04/356,133.28
  6. Step 6: Final answer
    x = 269,083.98

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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.