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Finding the Fourth Proportional to 358,891.20, 539,503.20 and 254,433.60

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Solution

The fourth proportional to 358,891.20, 539,503.20 and 254,433.60 is: 382,477.31

Step by Step Solution

  1. Step 1: Write the proportion equation
    358,891.20 : 539,503.20 = 254,433.60 : x
  2. Step 2: Convert to fraction form
    358,891.20/539,503.20 = 254,433.60/x
  3. Step 3: Cross multiply
    358,891.20x = 539,503.20 × 254,433.60
  4. Step 4: Simplify right side
    358,891.20x = 137,267,741,387.52
  5. Step 5: Solve for x
    x = 137,267,741,387.52/358,891.20
  6. Step 6: Final answer
    x = 382,477.31

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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.