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Finding the Fourth Proportional to 407,070.50, 561,824.56 and 225,840.82

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Solution

The fourth proportional to 407,070.50, 561,824.56 and 225,840.82 is: 311,697.65

Step by Step Solution

  1. Step 1: Write the proportion equation
    407,070.50 : 561,824.56 = 225,840.82 : x
  2. Step 2: Convert to fraction form
    407,070.50/561,824.56 = 225,840.82/x
  3. Step 3: Cross multiply
    407,070.50x = 561,824.56 × 225,840.82
  4. Step 4: Simplify right side
    407,070.50x = 126,882,918,479.64
  5. Step 5: Solve for x
    x = 126,882,918,479.64/407,070.50
  6. Step 6: Final answer
    x = 311,697.65

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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.