Home / 212,686.66-319,029.99-54,902.81

Finding the Fourth Proportional to 212,686.66, 319,029.99 and 54,902.81

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Solution

The fourth proportional to 212,686.66, 319,029.99 and 54,902.81 is: 82,354.22

Step by Step Solution

  1. Step 1: Write the proportion equation
    212,686.66 : 319,029.99 = 54,902.81 : x
  2. Step 2: Convert to fraction form
    212,686.66/319,029.99 = 54,902.81/x
  3. Step 3: Cross multiply
    212,686.66x = 319,029.99 × 54,902.81
  4. Step 4: Simplify right side
    212,686.66x = 17,515,643,825.79
  5. Step 5: Solve for x
    x = 17,515,643,825.79/212,686.66
  6. Step 6: Final answer
    x = 82,354.22

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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.