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Finding the Fourth Proportional to 438,649.32, 657,977.82 and 106,225.64

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Solution

The fourth proportional to 438,649.32, 657,977.82 and 106,225.64 is: 159,339.39

Step by Step Solution

  1. Step 1: Write the proportion equation
    438,649.32 : 657,977.82 = 106,225.64 : x
  2. Step 2: Convert to fraction form
    438,649.32/657,977.82 = 106,225.64/x
  3. Step 3: Cross multiply
    438,649.32x = 657,977.82 × 106,225.64
  4. Step 4: Simplify right side
    438,649.32x = 69,894,115,035.30
  5. Step 5: Solve for x
    x = 69,894,115,035.30/438,649.32
  6. Step 6: Final answer
    x = 159,339.39

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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.