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Finding the Fourth Proportional to 319,873.51, 479,877.94 and 120,195.63

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Solution

The fourth proportional to 319,873.51, 479,877.94 and 120,195.63 is: 180,318.87

Step by Step Solution

  1. Step 1: Write the proportion equation
    319,873.51 : 479,877.94 = 120,195.63 : x
  2. Step 2: Convert to fraction form
    319,873.51/479,877.94 = 120,195.63/x
  3. Step 3: Cross multiply
    319,873.51x = 479,877.94 × 120,195.63
  4. Step 4: Simplify right side
    319,873.51x = 57,679,230,795.55
  5. Step 5: Solve for x
    x = 57,679,230,795.55/319,873.51
  6. Step 6: Final answer
    x = 180,318.87

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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.