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Finding the Fourth Proportional to 328,479.53, 492,718.49 and 79,161.53

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Solution

The fourth proportional to 328,479.53, 492,718.49 and 79,161.53 is: 118,742.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    328,479.53 : 492,718.49 = 79,161.53 : x
  2. Step 2: Convert to fraction form
    328,479.53/492,718.49 = 79,161.53/x
  3. Step 3: Cross multiply
    328,479.53x = 492,718.49 × 79,161.53
  4. Step 4: Simplify right side
    328,479.53x = 39,004,350,363.68
  5. Step 5: Solve for x
    x = 39,004,350,363.68/328,479.53
  6. Step 6: Final answer
    x = 118,742.10

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1.5x scale

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.