Home / 209,089.20-313,633.80-51,315.60

Finding the Fourth Proportional to 209,089.20, 313,633.80 and 51,315.60

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Solution

The fourth proportional to 209,089.20, 313,633.80 and 51,315.60 is: 76,973.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    209,089.20 : 313,633.80 = 51,315.60 : x
  2. Step 2: Convert to fraction form
    209,089.20/313,633.80 = 51,315.60/x
  3. Step 3: Cross multiply
    209,089.20x = 313,633.80 × 51,315.60
  4. Step 4: Simplify right side
    209,089.20x = 16,094,306,627.28
  5. Step 5: Solve for x
    x = 16,094,306,627.28/209,089.20
  6. Step 6: Final answer
    x = 76,973.40

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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.