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Finding the Fourth Proportional to 326,556.84, 489,460.64 and 136,982.15

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Solution

The fourth proportional to 326,556.84, 489,460.64 and 136,982.15 is: 205,316.08

Step by Step Solution

  1. Step 1: Write the proportion equation
    326,556.84 : 489,460.64 = 136,982.15 : x
  2. Step 2: Convert to fraction form
    326,556.84/489,460.64 = 136,982.15/x
  3. Step 3: Cross multiply
    326,556.84x = 489,460.64 × 136,982.15
  4. Step 4: Simplify right side
    326,556.84x = 67,047,370,807.58
  5. Step 5: Solve for x
    x = 67,047,370,807.58/326,556.84
  6. Step 6: Final answer
    x = 205,316.08

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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.