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Finding the Fourth Proportional to 500,147.39, 690,203.35 and 270,704.64

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Solution

The fourth proportional to 500,147.39, 690,203.35 and 270,704.64 is: 373,572.38

Step by Step Solution

  1. Step 1: Write the proportion equation
    500,147.39 : 690,203.35 = 270,704.64 : x
  2. Step 2: Convert to fraction form
    500,147.39/690,203.35 = 270,704.64/x
  3. Step 3: Cross multiply
    500,147.39x = 690,203.35 × 270,704.64
  4. Step 4: Simplify right side
    500,147.39x = 186,841,249,388.54
  5. Step 5: Solve for x
    x = 186,841,249,388.54/500,147.39
  6. Step 6: Final answer
    x = 373,572.38

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.