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Finding the Fourth Proportional to 284,563.30, 426,866.55 and 84,868.06

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Solution

The fourth proportional to 284,563.30, 426,866.55 and 84,868.06 is: 127,308.53

Step by Step Solution

  1. Step 1: Write the proportion equation
    284,563.30 : 426,866.55 = 84,868.06 : x
  2. Step 2: Convert to fraction form
    284,563.30/426,866.55 = 84,868.06/x
  3. Step 3: Cross multiply
    284,563.30x = 426,866.55 × 84,868.06
  4. Step 4: Simplify right side
    284,563.30x = 36,227,335,977.39
  5. Step 5: Solve for x
    x = 36,227,335,977.39/284,563.30
  6. Step 6: Final answer
    x = 127,308.53

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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.