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Finding the Fourth Proportional to 338,800.80, 507,523.66 and 203,790.30

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Solution

The fourth proportional to 338,800.80, 507,523.66 and 203,790.30 is: 305,277.91

Step by Step Solution

  1. Step 1: Write the proportion equation
    338,800.80 : 507,523.66 = 203,790.30 : x
  2. Step 2: Convert to fraction form
    338,800.80/507,523.66 = 203,790.30/x
  3. Step 3: Cross multiply
    338,800.80x = 507,523.66 × 203,790.30
  4. Step 4: Simplify right side
    338,800.80x = 103,428,398,928.50
  5. Step 5: Solve for x
    x = 103,428,398,928.50/338,800.80
  6. Step 6: Final answer
    x = 305,277.91

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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.