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Finding the Fourth Proportional to 236,498.42, 354,536.64 and 86,703.74

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Solution

The fourth proportional to 236,498.42, 354,536.64 and 86,703.74 is: 129,978.25

Step by Step Solution

  1. Step 1: Write the proportion equation
    236,498.42 : 354,536.64 = 86,703.74 : x
  2. Step 2: Convert to fraction form
    236,498.42/354,536.64 = 86,703.74/x
  3. Step 3: Cross multiply
    236,498.42x = 354,536.64 × 86,703.74
  4. Step 4: Simplify right side
    236,498.42x = 30,739,650,882.35
  5. Step 5: Solve for x
    x = 30,739,650,882.35/236,498.42
  6. Step 6: Final answer
    x = 129,978.25

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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.