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Finding the Fourth Proportional to 351,603.87, 485,215.67 and 190,458.92

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Solution

The fourth proportional to 351,603.87, 485,215.67 and 190,458.92 is: 262,834.57

Step by Step Solution

  1. Step 1: Write the proportion equation
    351,603.87 : 485,215.67 = 190,458.92 : x
  2. Step 2: Convert to fraction form
    351,603.87/485,215.67 = 190,458.92/x
  3. Step 3: Cross multiply
    351,603.87x = 485,215.67 × 190,458.92
  4. Step 4: Simplify right side
    351,603.87x = 92,413,652,475.28
  5. Step 5: Solve for x
    x = 92,413,652,475.28/351,603.87
  6. Step 6: Final answer
    x = 262,834.57

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.