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Finding the Fourth Proportional to 265,219.80, 397,829.70 and 260,845.80

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Solution

The fourth proportional to 265,219.80, 397,829.70 and 260,845.80 is: 391,268.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    265,219.80 : 397,829.70 = 260,845.80 : x
  2. Step 2: Convert to fraction form
    265,219.80/397,829.70 = 260,845.80/x
  3. Step 3: Cross multiply
    265,219.80x = 397,829.70 × 260,845.80
  4. Step 4: Simplify right side
    265,219.80x = 103,772,206,360.26
  5. Step 5: Solve for x
    x = 103,772,206,360.26/265,219.80
  6. Step 6: Final answer
    x = 391,268.70

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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.