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Finding the Fourth Proportional to 356,614.71, 492,178.74 and 220,692.47

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Solution

The fourth proportional to 356,614.71, 492,178.74 and 220,692.47 is: 304,586.82

Step by Step Solution

  1. Step 1: Write the proportion equation
    356,614.71 : 492,178.74 = 220,692.47 : x
  2. Step 2: Convert to fraction form
    356,614.71/492,178.74 = 220,692.47/x
  3. Step 3: Cross multiply
    356,614.71x = 492,178.74 × 220,692.47
  4. Step 4: Simplify right side
    356,614.71x = 108,620,139,351.19
  5. Step 5: Solve for x
    x = 108,620,139,351.19/356,614.71
  6. Step 6: Final answer
    x = 304,586.82

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.