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Finding the Fourth Proportional to 374,389.32, 561,583.97 and 90,079.88

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Solution

The fourth proportional to 374,389.32, 561,583.97 and 90,079.88 is: 135,119.81

Step by Step Solution

  1. Step 1: Write the proportion equation
    374,389.32 : 561,583.97 = 90,079.88 : x
  2. Step 2: Convert to fraction form
    374,389.32/561,583.97 = 90,079.88/x
  3. Step 3: Cross multiply
    374,389.32x = 561,583.97 × 90,079.88
  4. Step 4: Simplify right side
    374,389.32x = 50,587,413,369.20
  5. Step 5: Solve for x
    x = 50,587,413,369.20/374,389.32
  6. Step 6: Final answer
    x = 135,119.81

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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.