Home / 407,121.17-561,836.22-225,827.21

Finding the Fourth Proportional to 407,121.17, 561,836.22 and 225,827.21

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Solution

The fourth proportional to 407,121.17, 561,836.22 and 225,827.21 is: 311,646.55

Step by Step Solution

  1. Step 1: Write the proportion equation
    407,121.17 : 561,836.22 = 225,827.21 : x
  2. Step 2: Convert to fraction form
    407,121.17/561,836.22 = 225,827.21/x
  3. Step 3: Cross multiply
    407,121.17x = 561,836.22 × 225,827.21
  4. Step 4: Simplify right side
    407,121.17x = 126,877,906,039.55
  5. Step 5: Solve for x
    x = 126,877,906,039.55/407,121.17
  6. Step 6: Final answer
    x = 311,646.55

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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.