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Finding the Fourth Proportional to 471,616.60, 707,716.54 and 191,136.28

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Solution

The fourth proportional to 471,616.60, 707,716.54 and 191,136.28 is: 286,822.62

Step by Step Solution

  1. Step 1: Write the proportion equation
    471,616.60 : 707,716.54 = 191,136.28 : x
  2. Step 2: Convert to fraction form
    471,616.60/707,716.54 = 191,136.28/x
  3. Step 3: Cross multiply
    471,616.60x = 707,716.54 × 191,136.28
  4. Step 4: Simplify right side
    471,616.60x = 135,270,306,750.07
  5. Step 5: Solve for x
    x = 135,270,306,750.07/471,616.60
  6. Step 6: Final answer
    x = 286,822.62

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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.