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Finding the Fourth Proportional to 426,094.01, 639,031.66 and 126,505.08

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Solution

The fourth proportional to 426,094.01, 639,031.66 and 126,505.08 is: 189,725.15

Step by Step Solution

  1. Step 1: Write the proportion equation
    426,094.01 : 639,031.66 = 126,505.08 : x
  2. Step 2: Convert to fraction form
    426,094.01/639,031.66 = 126,505.08/x
  3. Step 3: Cross multiply
    426,094.01x = 639,031.66 × 126,505.08
  4. Step 4: Simplify right side
    426,094.01x = 80,840,751,270.83
  5. Step 5: Solve for x
    x = 80,840,751,270.83/426,094.01
  6. Step 6: Final answer
    x = 189,725.15

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.