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Finding the Fourth Proportional to 279,762.66, 419,703.66 and 90,233.66

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Solution

The fourth proportional to 279,762.66, 419,703.66 and 90,233.66 is: 135,369.74

Step by Step Solution

  1. Step 1: Write the proportion equation
    279,762.66 : 419,703.66 = 90,233.66 : x
  2. Step 2: Convert to fraction form
    279,762.66/419,703.66 = 90,233.66/x
  3. Step 3: Cross multiply
    279,762.66x = 419,703.66 × 90,233.66
  4. Step 4: Simplify right side
    279,762.66x = 37,871,398,406.45
  5. Step 5: Solve for x
    x = 37,871,398,406.45/279,762.66
  6. Step 6: Final answer
    x = 135,369.74

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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.