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Finding the Fourth Proportional to 426,006.90, 638,467.65 and 226,422.90

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Solution

The fourth proportional to 426,006.90, 638,467.65 and 226,422.90 is: 339,345.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    426,006.90 : 638,467.65 = 226,422.90 : x
  2. Step 2: Convert to fraction form
    426,006.90/638,467.65 = 226,422.90/x
  3. Step 3: Cross multiply
    426,006.90x = 638,467.65 × 226,422.90
  4. Step 4: Simplify right side
    426,006.90x = 144,563,696,869.19
  5. Step 5: Solve for x
    x = 144,563,696,869.19/426,006.90
  6. Step 6: Final answer
    x = 339,345.90

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1.5x scale

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.