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Finding the Fourth Proportional to 236,781.88, 355,134.48 and 86,985.34

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Solution

The fourth proportional to 236,781.88, 355,134.48 and 86,985.34 is: 130,463.93

Step by Step Solution

  1. Step 1: Write the proportion equation
    236,781.88 : 355,134.48 = 86,985.34 : x
  2. Step 2: Convert to fraction form
    236,781.88/355,134.48 = 86,985.34/x
  3. Step 3: Cross multiply
    236,781.88x = 355,134.48 × 86,985.34
  4. Step 4: Simplify right side
    236,781.88x = 30,891,493,488.52
  5. Step 5: Solve for x
    x = 30,891,493,488.52/236,781.88
  6. Step 6: Final answer
    x = 130,463.93

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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.