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Finding the Fourth Proportional to 347,463.80, 521,195.70 and 328,110.20

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Solution

The fourth proportional to 347,463.80, 521,195.70 and 328,110.20 is: 492,165.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    347,463.80 : 521,195.70 = 328,110.20 : x
  2. Step 2: Convert to fraction form
    347,463.80/521,195.70 = 328,110.20/x
  3. Step 3: Cross multiply
    347,463.80x = 521,195.70 × 328,110.20
  4. Step 4: Simplify right side
    347,463.80x = 171,009,625,366.14
  5. Step 5: Solve for x
    x = 171,009,625,366.14/347,463.80
  6. Step 6: Final answer
    x = 492,165.30

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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.