Home / 213,040.63-319,318.14-133,115.50

Finding the Fourth Proportional to 213,040.63, 319,318.14 and 133,115.50

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Solution

The fourth proportional to 213,040.63, 319,318.14 and 133,115.50 is: 199,521.54

Step by Step Solution

  1. Step 1: Write the proportion equation
    213,040.63 : 319,318.14 = 133,115.50 : x
  2. Step 2: Convert to fraction form
    213,040.63/319,318.14 = 133,115.50/x
  3. Step 3: Cross multiply
    213,040.63x = 319,318.14 × 133,115.50
  4. Step 4: Simplify right side
    213,040.63x = 42,506,193,865.17
  5. Step 5: Solve for x
    x = 42,506,193,865.17/213,040.63
  6. Step 6: Final answer
    x = 199,521.54

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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.