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Finding the Fourth Proportional to 342,616.89, 513,939.74 and 105,964.05

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Solution

The fourth proportional to 342,616.89, 513,939.74 and 105,964.05 is: 158,950.53

Step by Step Solution

  1. Step 1: Write the proportion equation
    342,616.89 : 513,939.74 = 105,964.05 : x
  2. Step 2: Convert to fraction form
    342,616.89/513,939.74 = 105,964.05/x
  3. Step 3: Cross multiply
    342,616.89x = 513,939.74 × 105,964.05
  4. Step 4: Simplify right side
    342,616.89x = 54,459,136,306.35
  5. Step 5: Solve for x
    x = 54,459,136,306.35/342,616.89
  6. Step 6: Final answer
    x = 158,950.53

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.