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Finding the Fourth Proportional to 340,486.70, 509,952.45 and 200,518.70

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Solution

The fourth proportional to 340,486.70, 509,952.45 and 200,518.70 is: 300,320.11

Step by Step Solution

  1. Step 1: Write the proportion equation
    340,486.70 : 509,952.45 = 200,518.70 : x
  2. Step 2: Convert to fraction form
    340,486.70/509,952.45 = 200,518.70/x
  3. Step 3: Cross multiply
    340,486.70x = 509,952.45 × 200,518.70
  4. Step 4: Simplify right side
    340,486.70x = 102,255,002,335.82
  5. Step 5: Solve for x
    x = 102,255,002,335.82/340,486.70
  6. Step 6: Final answer
    x = 300,320.11

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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.