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Finding the Fourth Proportional to 320,179.88, 480,517.74 and 120,681.76

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Solution

The fourth proportional to 320,179.88, 480,517.74 and 120,681.76 is: 181,116.09

Step by Step Solution

  1. Step 1: Write the proportion equation
    320,179.88 : 480,517.74 = 120,681.76 : x
  2. Step 2: Convert to fraction form
    320,179.88/480,517.74 = 120,681.76/x
  3. Step 3: Cross multiply
    320,179.88x = 480,517.74 × 120,681.76
  4. Step 4: Simplify right side
    320,179.88x = 57,989,726,574.42
  5. Step 5: Solve for x
    x = 57,989,726,574.42/320,179.88
  6. Step 6: Final answer
    x = 181,116.09

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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.