Home / 465,438.11-698,143.26-128,499.35

Finding the Fourth Proportional to 465,438.11, 698,143.26 and 128,499.35

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Solution

The fourth proportional to 465,438.11, 698,143.26 and 128,499.35 is: 192,745.19

Step by Step Solution

  1. Step 1: Write the proportion equation
    465,438.11 : 698,143.26 = 128,499.35 : x
  2. Step 2: Convert to fraction form
    465,438.11/698,143.26 = 128,499.35/x
  3. Step 3: Cross multiply
    465,438.11x = 698,143.26 × 128,499.35
  4. Step 4: Simplify right side
    465,438.11x = 89,710,955,116.88
  5. Step 5: Solve for x
    x = 89,710,955,116.88/465,438.11
  6. Step 6: Final answer
    x = 192,745.19

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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.