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Finding the Fourth Proportional to 425,394.63, 638,104.32 and 159,104.34

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Solution

The fourth proportional to 425,394.63, 638,104.32 and 159,104.34 is: 238,661.14

Step by Step Solution

  1. Step 1: Write the proportion equation
    425,394.63 : 638,104.32 = 159,104.34 : x
  2. Step 2: Convert to fraction form
    425,394.63/638,104.32 = 159,104.34/x
  3. Step 3: Cross multiply
    425,394.63x = 638,104.32 × 159,104.34
  4. Step 4: Simplify right side
    425,394.63x = 101,525,166,684.75
  5. Step 5: Solve for x
    x = 101,525,166,684.75/425,394.63
  6. Step 6: Final answer
    x = 238,661.14

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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.