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Finding the Fourth Proportional to 378,035.20, 565,740.60 and 346,542.40

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Solution

The fourth proportional to 378,035.20, 565,740.60 and 346,542.40 is: 518,610.71

Step by Step Solution

  1. Step 1: Write the proportion equation
    378,035.20 : 565,740.60 = 346,542.40 : x
  2. Step 2: Convert to fraction form
    378,035.20/565,740.60 = 346,542.40/x
  3. Step 3: Cross multiply
    378,035.20x = 565,740.60 × 346,542.40
  4. Step 4: Simplify right side
    378,035.20x = 196,053,105,301.44
  5. Step 5: Solve for x
    x = 196,053,105,301.44/378,035.20
  6. Step 6: Final answer
    x = 518,610.71

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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.