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Finding the Fourth Proportional to 439,730, 606,758.28 and 248,682.32

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Solution

The fourth proportional to 439,730, 606,758.28 and 248,682.32 is: 343,142.51

Step by Step Solution

  1. Step 1: Write the proportion equation
    439,730 : 606,758.28 = 248,682.32 : x
  2. Step 2: Convert to fraction form
    439,730/606,758.28 = 248,682.32/x
  3. Step 3: Cross multiply
    439,730x = 606,758.28 × 248,682.32
  4. Step 4: Simplify right side
    439,730x = 150,890,056,749.61
  5. Step 5: Solve for x
    x = 150,890,056,749.61/439,730
  6. Step 6: Final answer
    x = 343,142.51

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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.