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Finding the Fourth Proportional to 356,605.92, 535,122.72 and 131,928.12

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Solution

The fourth proportional to 356,605.92, 535,122.72 and 131,928.12 is: 197,971.29

Step by Step Solution

  1. Step 1: Write the proportion equation
    356,605.92 : 535,122.72 = 131,928.12 : x
  2. Step 2: Convert to fraction form
    356,605.92/535,122.72 = 131,928.12/x
  3. Step 3: Cross multiply
    356,605.92x = 535,122.72 × 131,928.12
  4. Step 4: Simplify right side
    356,605.92x = 70,597,734,418.89
  5. Step 5: Solve for x
    x = 70,597,734,418.89/356,605.92
  6. Step 6: Final answer
    x = 197,971.29

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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.