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Finding the Fourth Proportional to 425,804.76, 638,809.74 and 159,567.62

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Solution

The fourth proportional to 425,804.76, 638,809.74 and 159,567.62 is: 239,389.87

Step by Step Solution

  1. Step 1: Write the proportion equation
    425,804.76 : 638,809.74 = 159,567.62 : x
  2. Step 2: Convert to fraction form
    425,804.76/638,809.74 = 159,567.62/x
  3. Step 3: Cross multiply
    425,804.76x = 638,809.74 × 159,567.62
  4. Step 4: Simplify right side
    425,804.76x = 101,933,346,650.57
  5. Step 5: Solve for x
    x = 101,933,346,650.57/425,804.76
  6. Step 6: Final answer
    x = 239,389.87

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1.5x scale

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.