Home / 426,156.38-639,068.34-159,771.50

Finding the Fourth Proportional to 426,156.38, 639,068.34 and 159,771.50

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Solution

The fourth proportional to 426,156.38, 639,068.34 and 159,771.50 is: 239,594.93

Step by Step Solution

  1. Step 1: Write the proportion equation
    426,156.38 : 639,068.34 = 159,771.50 : x
  2. Step 2: Convert to fraction form
    426,156.38/639,068.34 = 159,771.50/x
  3. Step 3: Cross multiply
    426,156.38x = 639,068.34 × 159,771.50
  4. Step 4: Simplify right side
    426,156.38x = 102,104,907,284.31
  5. Step 5: Solve for x
    x = 102,104,907,284.31/426,156.38
  6. Step 6: Final answer
    x = 239,594.93

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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.