Home / 313,982.40-470,938.60-86,295.48

Finding the Fourth Proportional to 313,982.40, 470,938.60 and 86,295.48

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Solution

The fourth proportional to 313,982.40, 470,938.60 and 86,295.48 is: 129,433.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    313,982.40 : 470,938.60 = 86,295.48 : x
  2. Step 2: Convert to fraction form
    313,982.40/470,938.60 = 86,295.48/x
  3. Step 3: Cross multiply
    313,982.40x = 470,938.60 × 86,295.48
  4. Step 4: Simplify right side
    313,982.40x = 40,639,872,537.53
  5. Step 5: Solve for x
    x = 40,639,872,537.53/313,982.40
  6. Step 6: Final answer
    x = 129,433.60

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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.