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Finding the Fourth Proportional to 319,065.71, 440,304.98 and 173,872.76

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Solution

The fourth proportional to 319,065.71, 440,304.98 and 173,872.76 is: 239,941.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    319,065.71 : 440,304.98 = 173,872.76 : x
  2. Step 2: Convert to fraction form
    319,065.71/440,304.98 = 173,872.76/x
  3. Step 3: Cross multiply
    319,065.71x = 440,304.98 × 173,872.76
  4. Step 4: Simplify right side
    319,065.71x = 76,557,039,043.46
  5. Step 5: Solve for x
    x = 76,557,039,043.46/319,065.71
  6. Step 6: Final answer
    x = 239,941.30

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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.