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Finding the Fourth Proportional to 426,099.37, 639,124 and 159,837.59

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Solution

The fourth proportional to 426,099.37, 639,124 and 159,837.59 is: 239,746.99

Step by Step Solution

  1. Step 1: Write the proportion equation
    426,099.37 : 639,124 = 159,837.59 : x
  2. Step 2: Convert to fraction form
    426,099.37/639,124 = 159,837.59/x
  3. Step 3: Cross multiply
    426,099.37x = 639,124 × 159,837.59
  4. Step 4: Simplify right side
    426,099.37x = 102,156,039,871.16
  5. Step 5: Solve for x
    x = 102,156,039,871.16/426,099.37
  6. Step 6: Final answer
    x = 239,746.99

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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.