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Finding the Fourth Proportional to 492,087.90, 738,161.01 and 155,139.24

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Solution

The fourth proportional to 492,087.90, 738,161.01 and 155,139.24 is: 232,718.05

Step by Step Solution

  1. Step 1: Write the proportion equation
    492,087.90 : 738,161.01 = 155,139.24 : x
  2. Step 2: Convert to fraction form
    492,087.90/738,161.01 = 155,139.24/x
  3. Step 3: Cross multiply
    492,087.90x = 738,161.01 × 155,139.24
  4. Step 4: Simplify right side
    492,087.90x = 114,517,738,089.03
  5. Step 5: Solve for x
    x = 114,517,738,089.03/492,087.90
  6. Step 6: Final answer
    x = 232,718.05

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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.