Home / 259,985.84-389,976.96-72,997.52

Finding the Fourth Proportional to 259,985.84, 389,976.96 and 72,997.52

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Solution

The fourth proportional to 259,985.84, 389,976.96 and 72,997.52 is: 109,495.77

Step by Step Solution

  1. Step 1: Write the proportion equation
    259,985.84 : 389,976.96 = 72,997.52 : x
  2. Step 2: Convert to fraction form
    259,985.84/389,976.96 = 72,997.52/x
  3. Step 3: Cross multiply
    259,985.84x = 389,976.96 × 72,997.52
  4. Step 4: Simplify right side
    259,985.84x = 28,467,350,937.14
  5. Step 5: Solve for x
    x = 28,467,350,937.14/259,985.84
  6. Step 6: Final answer
    x = 109,495.77

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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.