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Finding the Fourth Proportional to 407,220.84, 561,945.72 and 225,930.84

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Solution

The fourth proportional to 407,220.84, 561,945.72 and 225,930.84 is: 311,774.00

Step by Step Solution

  1. Step 1: Write the proportion equation
    407,220.84 : 561,945.72 = 225,930.84 : x
  2. Step 2: Convert to fraction form
    407,220.84/561,945.72 = 225,930.84/x
  3. Step 3: Cross multiply
    407,220.84x = 561,945.72 × 225,930.84
  4. Step 4: Simplify right side
    407,220.84x = 126,960,868,554.01
  5. Step 5: Solve for x
    x = 126,960,868,554.01/407,220.84
  6. Step 6: Final answer
    x = 311,774.00

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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.