Home / 212,806.32-319,282.38-72,663.36

Finding the Fourth Proportional to 212,806.32, 319,282.38 and 72,663.36

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Solution

The fourth proportional to 212,806.32, 319,282.38 and 72,663.36 is: 109,019.93

Step by Step Solution

  1. Step 1: Write the proportion equation
    212,806.32 : 319,282.38 = 72,663.36 : x
  2. Step 2: Convert to fraction form
    212,806.32/319,282.38 = 72,663.36/x
  3. Step 3: Cross multiply
    212,806.32x = 319,282.38 × 72,663.36
  4. Step 4: Simplify right side
    212,806.32x = 23,200,130,519.60
  5. Step 5: Solve for x
    x = 23,200,130,519.60/212,806.32
  6. Step 6: Final answer
    x = 109,019.93

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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.