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Finding the Fourth Proportional to 303,325.13, 454,987.71 and 81,709.13

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Solution

The fourth proportional to 303,325.13, 454,987.71 and 81,709.13 is: 122,563.69

Step by Step Solution

  1. Step 1: Write the proportion equation
    303,325.13 : 454,987.71 = 81,709.13 : x
  2. Step 2: Convert to fraction form
    303,325.13/454,987.71 = 81,709.13/x
  3. Step 3: Cross multiply
    303,325.13x = 454,987.71 × 81,709.13
  4. Step 4: Simplify right side
    303,325.13x = 37,176,647,669.85
  5. Step 5: Solve for x
    x = 37,176,647,669.85/303,325.13
  6. Step 6: Final answer
    x = 122,563.69

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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.