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Finding the Fourth Proportional to 425,931.90, 638,355.14 and 226,347.90

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Solution

The fourth proportional to 425,931.90, 638,355.14 and 226,347.90 is: 339,233.44

Step by Step Solution

  1. Step 1: Write the proportion equation
    425,931.90 : 638,355.14 = 226,347.90 : x
  2. Step 2: Convert to fraction form
    425,931.90/638,355.14 = 226,347.90/x
  3. Step 3: Cross multiply
    425,931.90x = 638,355.14 × 226,347.90
  4. Step 4: Simplify right side
    425,931.90x = 144,490,345,393.21
  5. Step 5: Solve for x
    x = 144,490,345,393.21/425,931.90
  6. Step 6: Final answer
    x = 339,233.44

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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.