Home / 212,859.31-319,313.67-70,717.27

Finding the Fourth Proportional to 212,859.31, 319,313.67 and 70,717.27

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Solution

The fourth proportional to 212,859.31, 319,313.67 and 70,717.27 is: 106,084.11

Step by Step Solution

  1. Step 1: Write the proportion equation
    212,859.31 : 319,313.67 = 70,717.27 : x
  2. Step 2: Convert to fraction form
    212,859.31/319,313.67 = 70,717.27/x
  3. Step 3: Cross multiply
    212,859.31x = 319,313.67 × 70,717.27
  4. Step 4: Simplify right side
    212,859.31x = 22,580,989,065.93
  5. Step 5: Solve for x
    x = 22,580,989,065.93/212,859.31
  6. Step 6: Final answer
    x = 106,084.11

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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.