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Finding the Fourth Proportional to 405,270.61, 607,249.81 and 247,019.29

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Solution

The fourth proportional to 405,270.61, 607,249.81 and 247,019.29 is: 370,129.02

Step by Step Solution

  1. Step 1: Write the proportion equation
    405,270.61 : 607,249.81 = 247,019.29 : x
  2. Step 2: Convert to fraction form
    405,270.61/607,249.81 = 247,019.29/x
  3. Step 3: Cross multiply
    405,270.61x = 607,249.81 × 247,019.29
  4. Step 4: Simplify right side
    405,270.61x = 150,002,414,783.16
  5. Step 5: Solve for x
    x = 150,002,414,783.16/405,270.61
  6. Step 6: Final answer
    x = 370,129.02

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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.