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Finding the Fourth Proportional to 519,724.96, 717,220.56 and 281,260.96

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Solution

The fourth proportional to 519,724.96, 717,220.56 and 281,260.96 is: 388,140.19

Step by Step Solution

  1. Step 1: Write the proportion equation
    519,724.96 : 717,220.56 = 281,260.96 : x
  2. Step 2: Convert to fraction form
    519,724.96/717,220.56 = 281,260.96/x
  3. Step 3: Cross multiply
    519,724.96x = 717,220.56 × 281,260.96
  4. Step 4: Simplify right side
    519,724.96x = 201,726,143,237.34
  5. Step 5: Solve for x
    x = 201,726,143,237.34/519,724.96
  6. Step 6: Final answer
    x = 388,140.19

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.