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Finding the Fourth Proportional to 374,638.36, 561,969.84 and 137,925.68

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Solution

The fourth proportional to 374,638.36, 561,969.84 and 137,925.68 is: 206,893.05

Step by Step Solution

  1. Step 1: Write the proportion equation
    374,638.36 : 561,969.84 = 137,925.68 : x
  2. Step 2: Convert to fraction form
    374,638.36/561,969.84 = 137,925.68/x
  3. Step 3: Cross multiply
    374,638.36x = 561,969.84 × 137,925.68
  4. Step 4: Simplify right side
    374,638.36x = 77,510,072,321.49
  5. Step 5: Solve for x
    x = 77,510,072,321.49/374,638.36
  6. Step 6: Final answer
    x = 206,893.05

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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.