Home / 212,814.74-319,228.80-79,669.58

Finding the Fourth Proportional to 212,814.74, 319,228.80 and 79,669.58

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Solution

The fourth proportional to 212,814.74, 319,228.80 and 79,669.58 is: 119,506.86

Step by Step Solution

  1. Step 1: Write the proportion equation
    212,814.74 : 319,228.80 = 79,669.58 : x
  2. Step 2: Convert to fraction form
    212,814.74/319,228.80 = 79,669.58/x
  3. Step 3: Cross multiply
    212,814.74x = 319,228.80 × 79,669.58
  4. Step 4: Simplify right side
    212,814.74x = 25,432,822,525.00
  5. Step 5: Solve for x
    x = 25,432,822,525.00/212,814.74
  6. Step 6: Final answer
    x = 119,506.86

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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.