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Finding the Fourth Proportional to 265,142.36, 397,775.82 and 87,649.35

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Solution

The fourth proportional to 265,142.36, 397,775.82 and 87,649.35 is: 131,494.62

Step by Step Solution

  1. Step 1: Write the proportion equation
    265,142.36 : 397,775.82 = 87,649.35 : x
  2. Step 2: Convert to fraction form
    265,142.36/397,775.82 = 87,649.35/x
  3. Step 3: Cross multiply
    265,142.36x = 397,775.82 × 87,649.35
  4. Step 4: Simplify right side
    265,142.36x = 34,864,792,068.72
  5. Step 5: Solve for x
    x = 34,864,792,068.72/265,142.36
  6. Step 6: Final answer
    x = 131,494.62

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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.