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Finding the Fourth Proportional to 259,602.08, 389,403.12 and 109,803.51

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Solution

The fourth proportional to 259,602.08, 389,403.12 and 109,803.51 is: 164,705.27

Step by Step Solution

  1. Step 1: Write the proportion equation
    259,602.08 : 389,403.12 = 109,803.51 : x
  2. Step 2: Convert to fraction form
    259,602.08/389,403.12 = 109,803.51/x
  3. Step 3: Cross multiply
    259,602.08x = 389,403.12 × 109,803.51
  4. Step 4: Simplify right side
    259,602.08x = 42,757,829,380.95
  5. Step 5: Solve for x
    x = 42,757,829,380.95/259,602.08
  6. Step 6: Final answer
    x = 164,705.27

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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.