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Finding the Fourth Proportional to 426,173.52, 639,364.36 and 141,863.52

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Solution

The fourth proportional to 426,173.52, 639,364.36 and 141,863.52 is: 212,829.93

Step by Step Solution

  1. Step 1: Write the proportion equation
    426,173.52 : 639,364.36 = 141,863.52 : x
  2. Step 2: Convert to fraction form
    426,173.52/639,364.36 = 141,863.52/x
  3. Step 3: Cross multiply
    426,173.52x = 639,364.36 × 141,863.52
  4. Step 4: Simplify right side
    426,173.52x = 90,702,478,672.15
  5. Step 5: Solve for x
    x = 90,702,478,672.15/426,173.52
  6. Step 6: Final answer
    x = 212,829.93

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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.