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Finding the Fourth Proportional to 265,513.90, 398,123.24 and 87,924.06

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Solution

The fourth proportional to 265,513.90, 398,123.24 and 87,924.06 is: 131,837.21

Step by Step Solution

  1. Step 1: Write the proportion equation
    265,513.90 : 398,123.24 = 87,924.06 : x
  2. Step 2: Convert to fraction form
    265,513.90/398,123.24 = 87,924.06/x
  3. Step 3: Cross multiply
    265,513.90x = 398,123.24 × 87,924.06
  4. Step 4: Simplify right side
    265,513.90x = 35,004,611,641.15
  5. Step 5: Solve for x
    x = 35,004,611,641.15/265,513.90
  6. Step 6: Final answer
    x = 131,837.21

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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.