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Finding the Fourth Proportional to 320,188.74, 480,283.10 and 120,553.91

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Solution

The fourth proportional to 320,188.74, 480,283.10 and 120,553.91 is: 180,830.86

Step by Step Solution

  1. Step 1: Write the proportion equation
    320,188.74 : 480,283.10 = 120,553.91 : x
  2. Step 2: Convert to fraction form
    320,188.74/480,283.10 = 120,553.91/x
  3. Step 3: Cross multiply
    320,188.74x = 480,283.10 × 120,553.91
  4. Step 4: Simplify right side
    320,188.74x = 57,900,005,611.92
  5. Step 5: Solve for x
    x = 57,900,005,611.92/320,188.74
  6. Step 6: Final answer
    x = 180,830.86

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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.