Home / 378,034.20-565,739.10-346,541.40

Finding the Fourth Proportional to 378,034.20, 565,739.10 and 346,541.40

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Solution

The fourth proportional to 378,034.20, 565,739.10 and 346,541.40 is: 518,609.22

Step by Step Solution

  1. Step 1: Write the proportion equation
    378,034.20 : 565,739.10 = 346,541.40 : x
  2. Step 2: Convert to fraction form
    378,034.20/565,739.10 = 346,541.40/x
  3. Step 3: Cross multiply
    378,034.20x = 565,739.10 × 346,541.40
  4. Step 4: Simplify right side
    378,034.20x = 196,052,019,748.74
  5. Step 5: Solve for x
    x = 196,052,019,748.74/378,034.20
  6. Step 6: Final answer
    x = 518,609.22

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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.