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Finding the Fourth Proportional to 438,377.82, 657,037.98 and 213,401.04

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Solution

The fourth proportional to 438,377.82, 657,037.98 and 213,401.04 is: 319,844.17

Step by Step Solution

  1. Step 1: Write the proportion equation
    438,377.82 : 657,037.98 = 213,401.04 : x
  2. Step 2: Convert to fraction form
    438,377.82/657,037.98 = 213,401.04/x
  3. Step 3: Cross multiply
    438,377.82x = 657,037.98 × 213,401.04
  4. Step 4: Simplify right side
    438,377.82x = 140,212,588,251.50
  5. Step 5: Solve for x
    x = 140,212,588,251.50/438,377.82
  6. Step 6: Final answer
    x = 319,844.17

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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.