Home / 391,148.25-539,692.03-221,382.38

Finding the Fourth Proportional to 391,148.25, 539,692.03 and 221,382.38

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Solution

The fourth proportional to 391,148.25, 539,692.03 and 221,382.38 is: 305,455.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    391,148.25 : 539,692.03 = 221,382.38 : x
  2. Step 2: Convert to fraction form
    391,148.25/539,692.03 = 221,382.38/x
  3. Step 3: Cross multiply
    391,148.25x = 539,692.03 × 221,382.38
  4. Step 4: Simplify right side
    391,148.25x = 119,478,306,068.43
  5. Step 5: Solve for x
    x = 119,478,306,068.43/391,148.25
  6. Step 6: Final answer
    x = 305,455.30

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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.