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Finding the Fourth Proportional to 259,671.54, 389,677.50 and 91,187.46

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Solution

The fourth proportional to 259,671.54, 389,677.50 and 91,187.46 is: 136,840.95

Step by Step Solution

  1. Step 1: Write the proportion equation
    259,671.54 : 389,677.50 = 91,187.46 : x
  2. Step 2: Convert to fraction form
    259,671.54/389,677.50 = 91,187.46/x
  3. Step 3: Cross multiply
    259,671.54x = 389,677.50 × 91,187.46
  4. Step 4: Simplify right side
    259,671.54x = 35,533,701,444.15
  5. Step 5: Solve for x
    x = 35,533,701,444.15/259,671.54
  6. Step 6: Final answer
    x = 136,840.95

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1.5x scale

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.