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Finding the Fourth Proportional to 425,362.41, 638,101.94 and 188,699.85

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Solution

The fourth proportional to 425,362.41, 638,101.94 and 188,699.85 is: 283,075.65

Step by Step Solution

  1. Step 1: Write the proportion equation
    425,362.41 : 638,101.94 = 188,699.85 : x
  2. Step 2: Convert to fraction form
    425,362.41/638,101.94 = 188,699.85/x
  3. Step 3: Cross multiply
    425,362.41x = 638,101.94 × 188,699.85
  4. Step 4: Simplify right side
    425,362.41x = 120,409,739,419.21
  5. Step 5: Solve for x
    x = 120,409,739,419.21/425,362.41
  6. Step 6: Final answer
    x = 283,075.65

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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.