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Finding the Fourth Proportional to 399,261.20, 598,200.60 and 258,947.60

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Solution

The fourth proportional to 399,261.20, 598,200.60 and 258,947.60 is: 387,973.11

Step by Step Solution

  1. Step 1: Write the proportion equation
    399,261.20 : 598,200.60 = 258,947.60 : x
  2. Step 2: Convert to fraction form
    399,261.20/598,200.60 = 258,947.60/x
  3. Step 3: Cross multiply
    399,261.20x = 598,200.60 × 258,947.60
  4. Step 4: Simplify right side
    399,261.20x = 154,902,609,688.56
  5. Step 5: Solve for x
    x = 154,902,609,688.56/399,261.20
  6. Step 6: Final answer
    x = 387,973.11

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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.