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Finding the Fourth Proportional to 356,394.42, 534,217.28 and 131,611.59

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Solution

The fourth proportional to 356,394.42, 534,217.28 and 131,611.59 is: 197,279.14

Step by Step Solution

  1. Step 1: Write the proportion equation
    356,394.42 : 534,217.28 = 131,611.59 : x
  2. Step 2: Convert to fraction form
    356,394.42/534,217.28 = 131,611.59/x
  3. Step 3: Cross multiply
    356,394.42x = 534,217.28 × 131,611.59
  4. Step 4: Simplify right side
    356,394.42x = 70,309,184,968.22
  5. Step 5: Solve for x
    x = 70,309,184,968.22/356,394.42
  6. Step 6: Final answer
    x = 197,279.14

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1.5x scale

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.