Home / 209,639.40-313,767.90-162,637.80

Finding the Fourth Proportional to 209,639.40, 313,767.90 and 162,637.80

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Solution

The fourth proportional to 209,639.40, 313,767.90 and 162,637.80 is: 243,420.47

Step by Step Solution

  1. Step 1: Write the proportion equation
    209,639.40 : 313,767.90 = 162,637.80 : x
  2. Step 2: Convert to fraction form
    209,639.40/313,767.90 = 162,637.80/x
  3. Step 3: Cross multiply
    209,639.40x = 313,767.90 × 162,637.80
  4. Step 4: Simplify right side
    209,639.40x = 51,030,520,966.62
  5. Step 5: Solve for x
    x = 51,030,520,966.62/209,639.40
  6. Step 6: Final answer
    x = 243,420.47

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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.