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Finding the Fourth Proportional to 393,531.30, 590,953.05 and 260,999.10

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Solution

The fourth proportional to 393,531.30, 590,953.05 and 260,999.10 is: 391,933.79

Step by Step Solution

  1. Step 1: Write the proportion equation
    393,531.30 : 590,953.05 = 260,999.10 : x
  2. Step 2: Convert to fraction form
    393,531.30/590,953.05 = 260,999.10/x
  3. Step 3: Cross multiply
    393,531.30x = 590,953.05 × 260,999.10
  4. Step 4: Simplify right side
    393,531.30x = 154,238,214,192.26
  5. Step 5: Solve for x
    x = 154,238,214,192.26/393,531.30
  6. Step 6: Final answer
    x = 391,933.79

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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.