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Finding the Fourth Proportional to 236,649.68, 326,578.14 and 129,220.46

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Solution

The fourth proportional to 236,649.68, 326,578.14 and 129,220.46 is: 178,325.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    236,649.68 : 326,578.14 = 129,220.46 : x
  2. Step 2: Convert to fraction form
    236,649.68/326,578.14 = 129,220.46/x
  3. Step 3: Cross multiply
    236,649.68x = 326,578.14 × 129,220.46
  4. Step 4: Simplify right side
    236,649.68x = 42,200,577,476.74
  5. Step 5: Solve for x
    x = 42,200,577,476.74/236,649.68
  6. Step 6: Final answer
    x = 178,325.10

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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.