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Finding the Fourth Proportional to 263,307.66, 363,408 and 161,389.80

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Solution

The fourth proportional to 263,307.66, 363,408 and 161,389.80 is: 222,744.54

Step by Step Solution

  1. Step 1: Write the proportion equation
    263,307.66 : 363,408 = 161,389.80 : x
  2. Step 2: Convert to fraction form
    263,307.66/363,408 = 161,389.80/x
  3. Step 3: Cross multiply
    263,307.66x = 363,408 × 161,389.80
  4. Step 4: Simplify right side
    263,307.66x = 58,650,344,438.40
  5. Step 5: Solve for x
    x = 58,650,344,438.40/263,307.66
  6. Step 6: Final answer
    x = 222,744.54

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1.5x scale

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.