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Finding the Fourth Proportional to 283,619.20, 425,428.80 and 266,123.20

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Solution

The fourth proportional to 283,619.20, 425,428.80 and 266,123.20 is: 399,184.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    283,619.20 : 425,428.80 = 266,123.20 : x
  2. Step 2: Convert to fraction form
    283,619.20/425,428.80 = 266,123.20/x
  3. Step 3: Cross multiply
    283,619.20x = 425,428.80 × 266,123.20
  4. Step 4: Simplify right side
    283,619.20x = 113,216,473,628.16
  5. Step 5: Solve for x
    x = 113,216,473,628.16/283,619.20
  6. Step 6: Final answer
    x = 399,184.80

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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.