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Finding the Fourth Proportional to 393,531.80, 590,953.80 and 260,999.60

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Solution

The fourth proportional to 393,531.80, 590,953.80 and 260,999.60 is: 391,934.54

Step by Step Solution

  1. Step 1: Write the proportion equation
    393,531.80 : 590,953.80 = 260,999.60 : x
  2. Step 2: Convert to fraction form
    393,531.80/590,953.80 = 260,999.60/x
  3. Step 3: Cross multiply
    393,531.80x = 590,953.80 × 260,999.60
  4. Step 4: Simplify right side
    393,531.80x = 154,238,705,418.48
  5. Step 5: Solve for x
    x = 154,238,705,418.48/393,531.80
  6. Step 6: Final answer
    x = 391,934.54

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1.5x scale

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.