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Finding the Fourth Proportional to 342,077.80, 512,899.36 and 300,042.30

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Solution

The fourth proportional to 342,077.80, 512,899.36 and 300,042.30 is: 449,872.82

Step by Step Solution

  1. Step 1: Write the proportion equation
    342,077.80 : 512,899.36 = 300,042.30 : x
  2. Step 2: Convert to fraction form
    342,077.80/512,899.36 = 300,042.30/x
  3. Step 3: Cross multiply
    342,077.80x = 512,899.36 × 300,042.30
  4. Step 4: Simplify right side
    342,077.80x = 153,891,503,642.93
  5. Step 5: Solve for x
    x = 153,891,503,642.93/342,077.80
  6. Step 6: Final answer
    x = 449,872.82

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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.