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Finding the Fourth Proportional to 319,274.66, 440,367.49 and 217,118.53

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Solution

The fourth proportional to 319,274.66, 440,367.49 and 217,118.53 is: 299,466.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    319,274.66 : 440,367.49 = 217,118.53 : x
  2. Step 2: Convert to fraction form
    319,274.66/440,367.49 = 217,118.53/x
  3. Step 3: Cross multiply
    319,274.66x = 440,367.49 × 217,118.53
  4. Step 4: Simplify right side
    319,274.66x = 95,611,939,212.09
  5. Step 5: Solve for x
    x = 95,611,939,212.09/319,274.66
  6. Step 6: Final answer
    x = 299,466.10

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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.