Home / 212,680.24-319,021.60-54,897.92

Finding the Fourth Proportional to 212,680.24, 319,021.60 and 54,897.92

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Solution

The fourth proportional to 212,680.24, 319,021.60 and 54,897.92 is: 82,347.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    212,680.24 : 319,021.60 = 54,897.92 : x
  2. Step 2: Convert to fraction form
    212,680.24/319,021.60 = 54,897.92/x
  3. Step 3: Cross multiply
    212,680.24x = 319,021.60 × 54,897.92
  4. Step 4: Simplify right side
    212,680.24x = 17,513,622,275.07
  5. Step 5: Solve for x
    x = 17,513,622,275.07/212,680.24
  6. Step 6: Final answer
    x = 82,347.20

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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.