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Finding the Fourth Proportional to 492,391.65, 738,069.08 and 192,756.45

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Solution

The fourth proportional to 492,391.65, 738,069.08 and 192,756.45 is: 288,931.74

Step by Step Solution

  1. Step 1: Write the proportion equation
    492,391.65 : 738,069.08 = 192,756.45 : x
  2. Step 2: Convert to fraction form
    492,391.65/738,069.08 = 192,756.45/x
  3. Step 3: Cross multiply
    492,391.65x = 738,069.08 × 192,756.45
  4. Step 4: Simplify right side
    492,391.65x = 142,267,574,751.78
  5. Step 5: Solve for x
    x = 142,267,574,751.78/492,391.65
  6. Step 6: Final answer
    x = 288,931.74

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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.