Home / 521,016.30-719,143.92-306,225.36

Finding the Fourth Proportional to 521,016.30, 719,143.92 and 306,225.36

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Solution

The fourth proportional to 521,016.30, 719,143.92 and 306,225.36 is: 422,674.12

Step by Step Solution

  1. Step 1: Write the proportion equation
    521,016.30 : 719,143.92 = 306,225.36 : x
  2. Step 2: Convert to fraction form
    521,016.30/719,143.92 = 306,225.36/x
  3. Step 3: Cross multiply
    521,016.30x = 719,143.92 × 306,225.36
  4. Step 4: Simplify right side
    521,016.30x = 220,220,105,793.81
  5. Step 5: Solve for x
    x = 220,220,105,793.81/521,016.30
  6. Step 6: Final answer
    x = 422,674.12

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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.