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Finding the Fourth Proportional to 407,191.60, 561,927.80 and 225,915.42

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Solution

The fourth proportional to 407,191.60, 561,927.80 and 225,915.42 is: 311,765.16

Step by Step Solution

  1. Step 1: Write the proportion equation
    407,191.60 : 561,927.80 = 225,915.42 : x
  2. Step 2: Convert to fraction form
    407,191.60/561,927.80 = 225,915.42/x
  3. Step 3: Cross multiply
    407,191.60x = 561,927.80 × 225,915.42
  4. Step 4: Simplify right side
    407,191.60x = 126,948,154,946.68
  5. Step 5: Solve for x
    x = 126,948,154,946.68/407,191.60
  6. Step 6: Final answer
    x = 311,765.16

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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.