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Finding the Fourth Proportional to 388,692.29, 582,908.20 and 148,750.45

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Solution

The fourth proportional to 388,692.29, 582,908.20 and 148,750.45 is: 223,075.83

Step by Step Solution

  1. Step 1: Write the proportion equation
    388,692.29 : 582,908.20 = 148,750.45 : x
  2. Step 2: Convert to fraction form
    388,692.29/582,908.20 = 148,750.45/x
  3. Step 3: Cross multiply
    388,692.29x = 582,908.20 × 148,750.45
  4. Step 4: Simplify right side
    388,692.29x = 86,707,855,229.54
  5. Step 5: Solve for x
    x = 86,707,855,229.54/388,692.29
  6. Step 6: Final answer
    x = 223,075.83

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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.