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Finding the Fourth Proportional to 265,012.96, 397,577.76 and 115,276.72

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Solution

The fourth proportional to 265,012.96, 397,577.76 and 115,276.72 is: 172,940.45

Step by Step Solution

  1. Step 1: Write the proportion equation
    265,012.96 : 397,577.76 = 115,276.72 : x
  2. Step 2: Convert to fraction form
    265,012.96/397,577.76 = 115,276.72/x
  3. Step 3: Cross multiply
    265,012.96x = 397,577.76 × 115,276.72
  4. Step 4: Simplify right side
    265,012.96x = 45,831,460,117.75
  5. Step 5: Solve for x
    x = 45,831,460,117.75/265,012.96
  6. Step 6: Final answer
    x = 172,940.45

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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.