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Finding the Fourth Proportional to 426,266.28, 638,530.02 and 265,816.98

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Solution

The fourth proportional to 426,266.28, 638,530.02 and 265,816.98 is: 398,183.32

Step by Step Solution

  1. Step 1: Write the proportion equation
    426,266.28 : 638,530.02 = 265,816.98 : x
  2. Step 2: Convert to fraction form
    426,266.28/638,530.02 = 265,816.98/x
  3. Step 3: Cross multiply
    426,266.28x = 638,530.02 × 265,816.98
  4. Step 4: Simplify right side
    426,266.28x = 169,732,121,555.74
  5. Step 5: Solve for x
    x = 169,732,121,555.74/426,266.28
  6. Step 6: Final answer
    x = 398,183.32

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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.