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Finding the Fourth Proportional to 340,520.90, 469,918.82 and 197,363.98

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Solution

The fourth proportional to 340,520.90, 469,918.82 and 197,363.98 is: 272,362.28

Step by Step Solution

  1. Step 1: Write the proportion equation
    340,520.90 : 469,918.82 = 197,363.98 : x
  2. Step 2: Convert to fraction form
    340,520.90/469,918.82 = 197,363.98/x
  3. Step 3: Cross multiply
    340,520.90x = 469,918.82 × 197,363.98
  4. Step 4: Simplify right side
    340,520.90x = 92,745,048,592.10
  5. Step 5: Solve for x
    x = 92,745,048,592.10/340,520.90
  6. Step 6: Final answer
    x = 272,362.28

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.