Home / 388,627.20-583,080.96-135,945.60

Finding the Fourth Proportional to 388,627.20, 583,080.96 and 135,945.60

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Solution

The fourth proportional to 388,627.20, 583,080.96 and 135,945.60 is: 203,967.43

Step by Step Solution

  1. Step 1: Write the proportion equation
    388,627.20 : 583,080.96 = 135,945.60 : x
  2. Step 2: Convert to fraction form
    388,627.20/583,080.96 = 135,945.60/x
  3. Step 3: Cross multiply
    388,627.20x = 583,080.96 × 135,945.60
  4. Step 4: Simplify right side
    388,627.20x = 79,267,290,955.78
  5. Step 5: Solve for x
    x = 79,267,290,955.78/388,627.20
  6. Step 6: Final answer
    x = 203,967.43

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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.