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Finding the Fourth Proportional to 342,529.80, 513,794.70 and 155,541.30

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Solution

The fourth proportional to 342,529.80, 513,794.70 and 155,541.30 is: 233,311.95

Step by Step Solution

  1. Step 1: Write the proportion equation
    342,529.80 : 513,794.70 = 155,541.30 : x
  2. Step 2: Convert to fraction form
    342,529.80/513,794.70 = 155,541.30/x
  3. Step 3: Cross multiply
    342,529.80x = 513,794.70 × 155,541.30
  4. Step 4: Simplify right side
    342,529.80x = 79,916,295,571.11
  5. Step 5: Solve for x
    x = 79,916,295,571.11/342,529.80
  6. Step 6: Final answer
    x = 233,311.95

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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.