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Finding the Fourth Proportional to 426,124.48, 639,165.96 and 159,864.25

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Solution

The fourth proportional to 426,124.48, 639,165.96 and 159,864.25 is: 239,788.59

Step by Step Solution

  1. Step 1: Write the proportion equation
    426,124.48 : 639,165.96 = 159,864.25 : x
  2. Step 2: Convert to fraction form
    426,124.48/639,165.96 = 159,864.25/x
  3. Step 3: Cross multiply
    426,124.48x = 639,165.96 × 159,864.25
  4. Step 4: Simplify right side
    426,124.48x = 102,179,786,820.93
  5. Step 5: Solve for x
    x = 102,179,786,820.93/426,124.48
  6. Step 6: Final answer
    x = 239,788.59

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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.