Home / 289,848.31-399,990.30-160,806.36

Finding the Fourth Proportional to 289,848.31, 399,990.30 and 160,806.36

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Solution

The fourth proportional to 289,848.31, 399,990.30 and 160,806.36 is: 221,912.57

Step by Step Solution

  1. Step 1: Write the proportion equation
    289,848.31 : 399,990.30 = 160,806.36 : x
  2. Step 2: Convert to fraction form
    289,848.31/399,990.30 = 160,806.36/x
  3. Step 3: Cross multiply
    289,848.31x = 399,990.30 × 160,806.36
  4. Step 4: Simplify right side
    289,848.31x = 64,320,984,178.31
  5. Step 5: Solve for x
    x = 64,320,984,178.31/289,848.31
  6. Step 6: Final answer
    x = 221,912.57

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.