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Finding the Fourth Proportional to 329,417.86, 454,421.36 and 200,395.80

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Solution

The fourth proportional to 329,417.86, 454,421.36 and 200,395.80 is: 276,439.57

Step by Step Solution

  1. Step 1: Write the proportion equation
    329,417.86 : 454,421.36 = 200,395.80 : x
  2. Step 2: Convert to fraction form
    329,417.86/454,421.36 = 200,395.80/x
  3. Step 3: Cross multiply
    329,417.86x = 454,421.36 × 200,395.80
  4. Step 4: Simplify right side
    329,417.86x = 91,064,131,974.29
  5. Step 5: Solve for x
    x = 91,064,131,974.29/329,417.86
  6. Step 6: Final answer
    x = 276,439.57

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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.