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Finding the Fourth Proportional to 260,655.51, 359,620.95 and 145,917.25

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Solution

The fourth proportional to 260,655.51, 359,620.95 and 145,917.25 is: 201,318.98

Step by Step Solution

  1. Step 1: Write the proportion equation
    260,655.51 : 359,620.95 = 145,917.25 : x
  2. Step 2: Convert to fraction form
    260,655.51/359,620.95 = 145,917.25/x
  3. Step 3: Cross multiply
    260,655.51x = 359,620.95 × 145,917.25
  4. Step 4: Simplify right side
    260,655.51x = 52,474,901,737.39
  5. Step 5: Solve for x
    x = 52,474,901,737.39/260,655.51
  6. Step 6: Final answer
    x = 201,318.98

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.