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Finding the Fourth Proportional to 320,395.32, 480,592.98 and 120,760.56

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Solution

The fourth proportional to 320,395.32, 480,592.98 and 120,760.56 is: 181,140.84

Step by Step Solution

  1. Step 1: Write the proportion equation
    320,395.32 : 480,592.98 = 120,760.56 : x
  2. Step 2: Convert to fraction form
    320,395.32/480,592.98 = 120,760.56/x
  3. Step 3: Cross multiply
    320,395.32x = 480,592.98 × 120,760.56
  4. Step 4: Simplify right side
    320,395.32x = 58,036,677,396.87
  5. Step 5: Solve for x
    x = 58,036,677,396.87/320,395.32
  6. Step 6: Final answer
    x = 181,140.84

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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.