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Finding the Fourth Proportional to 426,996.71, 640,579.64 and 224,689.34

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Solution

The fourth proportional to 426,996.71, 640,579.64 and 224,689.34 is: 337,078.51

Step by Step Solution

  1. Step 1: Write the proportion equation
    426,996.71 : 640,579.64 = 224,689.34 : x
  2. Step 2: Convert to fraction form
    426,996.71/640,579.64 = 224,689.34/x
  3. Step 3: Cross multiply
    426,996.71x = 640,579.64 × 224,689.34
  4. Step 4: Simplify right side
    426,996.71x = 143,931,418,270.92
  5. Step 5: Solve for x
    x = 143,931,418,270.92/426,996.71
  6. Step 6: Final answer
    x = 337,078.51

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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.