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Finding the Fourth Proportional to 236,785.86, 354,957.34 and 86,985.93

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Solution

The fourth proportional to 236,785.86, 354,957.34 and 86,985.93 is: 130,397.54

Step by Step Solution

  1. Step 1: Write the proportion equation
    236,785.86 : 354,957.34 = 86,985.93 : x
  2. Step 2: Convert to fraction form
    236,785.86/354,957.34 = 86,985.93/x
  3. Step 3: Cross multiply
    236,785.86x = 354,957.34 × 86,985.93
  4. Step 4: Simplify right side
    236,785.86x = 30,876,294,330.23
  5. Step 5: Solve for x
    x = 30,876,294,330.23/236,785.86
  6. Step 6: Final answer
    x = 130,397.54

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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.