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Finding the Fourth Proportional to 383,959.70, 575,939.55 and 215,998.10

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Solution

The fourth proportional to 383,959.70, 575,939.55 and 215,998.10 is: 323,997.15

Step by Step Solution

  1. Step 1: Write the proportion equation
    383,959.70 : 575,939.55 = 215,998.10 : x
  2. Step 2: Convert to fraction form
    383,959.70/575,939.55 = 215,998.10/x
  3. Step 3: Cross multiply
    383,959.70x = 575,939.55 × 215,998.10
  4. Step 4: Simplify right side
    383,959.70x = 124,401,848,514.86
  5. Step 5: Solve for x
    x = 124,401,848,514.86/383,959.70
  6. Step 6: Final answer
    x = 323,997.15

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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.