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Finding the Fourth Proportional to 348,332.70, 521,721.45 and 269,190.30

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Solution

The fourth proportional to 348,332.70, 521,721.45 and 269,190.30 is: 403,184.52

Step by Step Solution

  1. Step 1: Write the proportion equation
    348,332.70 : 521,721.45 = 269,190.30 : x
  2. Step 2: Convert to fraction form
    348,332.70/521,721.45 = 269,190.30/x
  3. Step 3: Cross multiply
    348,332.70x = 521,721.45 × 269,190.30
  4. Step 4: Simplify right side
    348,332.70x = 140,442,353,641.94
  5. Step 5: Solve for x
    x = 140,442,353,641.94/348,332.70
  6. Step 6: Final answer
    x = 403,184.52

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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.