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Finding the Fourth Proportional to 319,061.69, 440,299.46 and 173,868.74

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Solution

The fourth proportional to 319,061.69, 440,299.46 and 173,868.74 is: 239,935.76

Step by Step Solution

  1. Step 1: Write the proportion equation
    319,061.69 : 440,299.46 = 173,868.74 : x
  2. Step 2: Convert to fraction form
    319,061.69/440,299.46 = 173,868.74/x
  3. Step 3: Cross multiply
    319,061.69x = 440,299.46 × 173,868.74
  4. Step 4: Simplify right side
    319,061.69x = 76,554,309,262.04
  5. Step 5: Solve for x
    x = 76,554,309,262.04/319,061.69
  6. Step 6: Final answer
    x = 239,935.76

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1.5x scale

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.