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Finding the Fourth Proportional to 439,351.72, 606,319.72 and 243,120.46

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Solution

The fourth proportional to 439,351.72, 606,319.72 and 243,120.46 is: 335,514.17

Step by Step Solution

  1. Step 1: Write the proportion equation
    439,351.72 : 606,319.72 = 243,120.46 : x
  2. Step 2: Convert to fraction form
    439,351.72/606,319.72 = 243,120.46/x
  3. Step 3: Cross multiply
    439,351.72x = 606,319.72 × 243,120.46
  4. Step 4: Simplify right side
    439,351.72x = 147,408,729,233.47
  5. Step 5: Solve for x
    x = 147,408,729,233.47/439,351.72
  6. Step 6: Final answer
    x = 335,514.17

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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.