Home / 290,318.68-435,474.17-140,572.36

Finding the Fourth Proportional to 290,318.68, 435,474.17 and 140,572.36

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Solution

The fourth proportional to 290,318.68, 435,474.17 and 140,572.36 is: 210,856.67

Step by Step Solution

  1. Step 1: Write the proportion equation
    290,318.68 : 435,474.17 = 140,572.36 : x
  2. Step 2: Convert to fraction form
    290,318.68/435,474.17 = 140,572.36/x
  3. Step 3: Cross multiply
    290,318.68x = 435,474.17 × 140,572.36
  4. Step 4: Simplify right side
    290,318.68x = 61,215,628,915.71
  5. Step 5: Solve for x
    x = 61,215,628,915.71/290,318.68
  6. Step 6: Final answer
    x = 210,856.67

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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.