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Finding the Fourth Proportional to 439,219, 606,122.22 and 238,015

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Solution

The fourth proportional to 439,219, 606,122.22 and 238,015 is: 328,460.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    439,219 : 606,122.22 = 238,015 : x
  2. Step 2: Convert to fraction form
    439,219/606,122.22 = 238,015/x
  3. Step 3: Cross multiply
    439,219x = 606,122.22 × 238,015
  4. Step 4: Simplify right side
    439,219x = 144,266,180,193.30
  5. Step 5: Solve for x
    x = 144,266,180,193.30/439,219
  6. Step 6: Final answer
    x = 328,460.70

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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.