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Finding the Fourth Proportional to 236,781.04, 355,160 and 87,009.80

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Solution

The fourth proportional to 236,781.04, 355,160 and 87,009.80 is: 130,510.45

Step by Step Solution

  1. Step 1: Write the proportion equation
    236,781.04 : 355,160 = 87,009.80 : x
  2. Step 2: Convert to fraction form
    236,781.04/355,160 = 87,009.80/x
  3. Step 3: Cross multiply
    236,781.04x = 355,160 × 87,009.80
  4. Step 4: Simplify right side
    236,781.04x = 30,902,400,568
  5. Step 5: Solve for x
    x = 30,902,400,568/236,781.04
  6. Step 6: Final answer
    x = 130,510.45

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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.