Home / 403,441.38-605,142.63-99,834.30

Finding the Fourth Proportional to 403,441.38, 605,142.63 and 99,834.30

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Solution

The fourth proportional to 403,441.38, 605,142.63 and 99,834.30 is: 149,746.64

Step by Step Solution

  1. Step 1: Write the proportion equation
    403,441.38 : 605,142.63 = 99,834.30 : x
  2. Step 2: Convert to fraction form
    403,441.38/605,142.63 = 99,834.30/x
  3. Step 3: Cross multiply
    403,441.38x = 605,142.63 × 99,834.30
  4. Step 4: Simplify right side
    403,441.38x = 60,413,990,866.21
  5. Step 5: Solve for x
    x = 60,413,990,866.21/403,441.38
  6. Step 6: Final answer
    x = 149,746.64

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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.