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Finding the Fourth Proportional to 367,039.80, 550,430.10 and 130,390.20

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Solution

The fourth proportional to 367,039.80, 550,430.10 and 130,390.20 is: 195,539.26

Step by Step Solution

  1. Step 1: Write the proportion equation
    367,039.80 : 550,430.10 = 130,390.20 : x
  2. Step 2: Convert to fraction form
    367,039.80/550,430.10 = 130,390.20/x
  3. Step 3: Cross multiply
    367,039.80x = 550,430.10 × 130,390.20
  4. Step 4: Simplify right side
    367,039.80x = 71,770,690,825.02
  5. Step 5: Solve for x
    x = 71,770,690,825.02/367,039.80
  6. Step 6: Final answer
    x = 195,539.26

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1.5x scale

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.