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Finding the Fourth Proportional to 374,498.64, 561,742.50 and 121,790.76

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Solution

The fourth proportional to 374,498.64, 561,742.50 and 121,790.76 is: 182,684.36

Step by Step Solution

  1. Step 1: Write the proportion equation
    374,498.64 : 561,742.50 = 121,790.76 : x
  2. Step 2: Convert to fraction form
    374,498.64/561,742.50 = 121,790.76/x
  3. Step 3: Cross multiply
    374,498.64x = 561,742.50 × 121,790.76
  4. Step 4: Simplify right side
    374,498.64x = 68,415,045,999.30
  5. Step 5: Solve for x
    x = 68,415,045,999.30/374,498.64
  6. Step 6: Final answer
    x = 182,684.36

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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.