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Finding the Fourth Proportional to 284,570.20, 426,855.30 and 266,138.20

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Solution

The fourth proportional to 284,570.20, 426,855.30 and 266,138.20 is: 399,207.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    284,570.20 : 426,855.30 = 266,138.20 : x
  2. Step 2: Convert to fraction form
    284,570.20/426,855.30 = 266,138.20/x
  3. Step 3: Cross multiply
    284,570.20x = 426,855.30 × 266,138.20
  4. Step 4: Simplify right side
    284,570.20x = 113,602,501,202.46
  5. Step 5: Solve for x
    x = 113,602,501,202.46/284,570.20
  6. Step 6: Final answer
    x = 399,207.30

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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.