Home / 439,949.21-607,129.90-238,745.21

Finding the Fourth Proportional to 439,949.21, 607,129.90 and 238,745.21

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Solution

The fourth proportional to 439,949.21, 607,129.90 and 238,745.21 is: 329,468.38

Step by Step Solution

  1. Step 1: Write the proportion equation
    439,949.21 : 607,129.90 = 238,745.21 : x
  2. Step 2: Convert to fraction form
    439,949.21/607,129.90 = 238,745.21/x
  3. Step 3: Cross multiply
    439,949.21x = 607,129.90 × 238,745.21
  4. Step 4: Simplify right side
    439,949.21x = 144,949,355,472.78
  5. Step 5: Solve for x
    x = 144,949,355,472.78/439,949.21
  6. Step 6: Final answer
    x = 329,468.38

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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.