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Finding the Fourth Proportional to 439,357.14, 606,339 and 248,388.30

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Solution

The fourth proportional to 439,357.14, 606,339 and 248,388.30 is: 342,790.64

Step by Step Solution

  1. Step 1: Write the proportion equation
    439,357.14 : 606,339 = 248,388.30 : x
  2. Step 2: Convert to fraction form
    439,357.14/606,339 = 248,388.30/x
  3. Step 3: Cross multiply
    439,357.14x = 606,339 × 248,388.30
  4. Step 4: Simplify right side
    439,357.14x = 150,607,513,433.70
  5. Step 5: Solve for x
    x = 150,607,513,433.70/439,357.14
  6. Step 6: Final answer
    x = 342,790.64

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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.