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Finding the Fourth Proportional to 374,418.64, 561,680.72 and 121,618.16

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Solution

The fourth proportional to 374,418.64, 561,680.72 and 121,618.16 is: 182,444.38

Step by Step Solution

  1. Step 1: Write the proportion equation
    374,418.64 : 561,680.72 = 121,618.16 : x
  2. Step 2: Convert to fraction form
    374,418.64/561,680.72 = 121,618.16/x
  3. Step 3: Cross multiply
    374,418.64x = 561,680.72 × 121,618.16
  4. Step 4: Simplify right side
    374,418.64x = 68,310,575,673.88
  5. Step 5: Solve for x
    x = 68,310,575,673.88/374,418.64
  6. Step 6: Final answer
    x = 182,444.38

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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.