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Finding the Fourth Proportional to 259,617.60, 389,426.40 and 109,808.10

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Solution

The fourth proportional to 259,617.60, 389,426.40 and 109,808.10 is: 164,712.15

Step by Step Solution

  1. Step 1: Write the proportion equation
    259,617.60 : 389,426.40 = 109,808.10 : x
  2. Step 2: Convert to fraction form
    259,617.60/389,426.40 = 109,808.10/x
  3. Step 3: Cross multiply
    259,617.60x = 389,426.40 × 109,808.10
  4. Step 4: Simplify right side
    259,617.60x = 42,762,173,073.84
  5. Step 5: Solve for x
    x = 42,762,173,073.84/259,617.60
  6. Step 6: Final answer
    x = 164,712.15

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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.