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Finding the Fourth Proportional to 320,311.13, 480,756.47 and 170,677.80

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Solution

The fourth proportional to 320,311.13, 480,756.47 and 170,677.80 is: 256,171.11

Step by Step Solution

  1. Step 1: Write the proportion equation
    320,311.13 : 480,756.47 = 170,677.80 : x
  2. Step 2: Convert to fraction form
    320,311.13/480,756.47 = 170,677.80/x
  3. Step 3: Cross multiply
    320,311.13x = 480,756.47 × 170,677.80
  4. Step 4: Simplify right side
    320,311.13x = 82,054,455,781.98
  5. Step 5: Solve for x
    x = 82,054,455,781.98/320,311.13
  6. Step 6: Final answer
    x = 256,171.11

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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.