Home / 236,822.48-326,811.20-129,390.20

Finding the Fourth Proportional to 236,822.48, 326,811.20 and 129,390.20

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Solution

The fourth proportional to 236,822.48, 326,811.20 and 129,390.20 is: 178,556.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    236,822.48 : 326,811.20 = 129,390.20 : x
  2. Step 2: Convert to fraction form
    236,822.48/326,811.20 = 129,390.20/x
  3. Step 3: Cross multiply
    236,822.48x = 326,811.20 × 129,390.20
  4. Step 4: Simplify right side
    236,822.48x = 42,286,167,670.74
  5. Step 5: Solve for x
    x = 42,286,167,670.74/236,822.48
  6. Step 6: Final answer
    x = 178,556.40

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.