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Finding the Fourth Proportional to 492,399.38, 738,698.43 and 155,492.66

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Solution

The fourth proportional to 492,399.38, 738,698.43 and 155,492.66 is: 233,270.37

Step by Step Solution

  1. Step 1: Write the proportion equation
    492,399.38 : 738,698.43 = 155,492.66 : x
  2. Step 2: Convert to fraction form
    492,399.38/738,698.43 = 155,492.66/x
  3. Step 3: Cross multiply
    492,399.38x = 738,698.43 × 155,492.66
  4. Step 4: Simplify right side
    492,399.38x = 114,862,183,818.52
  5. Step 5: Solve for x
    x = 114,862,183,818.52/492,399.38
  6. Step 6: Final answer
    x = 233,270.37

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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.