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Finding the Fourth Proportional to 255,428.20, 382,486.20 and 202,502.80

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Solution

The fourth proportional to 255,428.20, 382,486.20 and 202,502.80 is: 303,234.05

Step by Step Solution

  1. Step 1: Write the proportion equation
    255,428.20 : 382,486.20 = 202,502.80 : x
  2. Step 2: Convert to fraction form
    255,428.20/382,486.20 = 202,502.80/x
  3. Step 3: Cross multiply
    255,428.20x = 382,486.20 × 202,502.80
  4. Step 4: Simplify right side
    255,428.20x = 77,454,526,461.36
  5. Step 5: Solve for x
    x = 77,454,526,461.36/255,428.20
  6. Step 6: Final answer
    x = 303,234.05

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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.