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Finding the Fourth Proportional to 426,187.26, 639,384.98 and 141,877.26

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Solution

The fourth proportional to 426,187.26, 639,384.98 and 141,877.26 is: 212,850.54

Step by Step Solution

  1. Step 1: Write the proportion equation
    426,187.26 : 639,384.98 = 141,877.26 : x
  2. Step 2: Convert to fraction form
    426,187.26/639,384.98 = 141,877.26/x
  3. Step 3: Cross multiply
    426,187.26x = 639,384.98 × 141,877.26
  4. Step 4: Simplify right side
    426,187.26x = 90,714,189,047.55
  5. Step 5: Solve for x
    x = 90,714,189,047.55/426,187.26
  6. Step 6: Final answer
    x = 212,850.54

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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.