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Finding the Fourth Proportional to 265,485.60, 398,218.32 and 107,671.68

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Solution

The fourth proportional to 265,485.60, 398,218.32 and 107,671.68 is: 161,503.43

Step by Step Solution

  1. Step 1: Write the proportion equation
    265,485.60 : 398,218.32 = 107,671.68 : x
  2. Step 2: Convert to fraction form
    265,485.60/398,218.32 = 107,671.68/x
  3. Step 3: Cross multiply
    265,485.60x = 398,218.32 × 107,671.68
  4. Step 4: Simplify right side
    265,485.60x = 42,876,835,521.18
  5. Step 5: Solve for x
    x = 42,876,835,521.18/265,485.60
  6. Step 6: Final answer
    x = 161,503.43

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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.