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Finding the Fourth Proportional to 374,172.63, 561,258.95 and 137,412.87

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Solution

The fourth proportional to 374,172.63, 561,258.95 and 137,412.87 is: 206,119.31

Step by Step Solution

  1. Step 1: Write the proportion equation
    374,172.63 : 561,258.95 = 137,412.87 : x
  2. Step 2: Convert to fraction form
    374,172.63/561,258.95 = 137,412.87/x
  3. Step 3: Cross multiply
    374,172.63x = 561,258.95 × 137,412.87
  4. Step 4: Simplify right side
    374,172.63x = 77,124,202,445.62
  5. Step 5: Solve for x
    x = 77,124,202,445.62/374,172.63
  6. Step 6: Final answer
    x = 206,119.31

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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.