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Finding the Fourth Proportional to 320,412.41, 480,335.77 and 120,872.93

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Solution

The fourth proportional to 320,412.41, 480,335.77 and 120,872.93 is: 181,202.68

Step by Step Solution

  1. Step 1: Write the proportion equation
    320,412.41 : 480,335.77 = 120,872.93 : x
  2. Step 2: Convert to fraction form
    320,412.41/480,335.77 = 120,872.93/x
  3. Step 3: Cross multiply
    320,412.41x = 480,335.77 × 120,872.93
  4. Step 4: Simplify right side
    320,412.41x = 58,059,589,199.84
  5. Step 5: Solve for x
    x = 58,059,589,199.84/320,412.41
  6. Step 6: Final answer
    x = 181,202.68

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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.