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Finding the Fourth Proportional to 326,308.97, 489,476.72 and 155,442.84

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Solution

The fourth proportional to 326,308.97, 489,476.72 and 155,442.84 is: 233,170.58

Step by Step Solution

  1. Step 1: Write the proportion equation
    326,308.97 : 489,476.72 = 155,442.84 : x
  2. Step 2: Convert to fraction form
    326,308.97/489,476.72 = 155,442.84/x
  3. Step 3: Cross multiply
    326,308.97x = 489,476.72 × 155,442.84
  4. Step 4: Simplify right side
    326,308.97x = 76,085,650,693.47
  5. Step 5: Solve for x
    x = 76,085,650,693.47/326,308.97
  6. Step 6: Final answer
    x = 233,170.58

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1.5x scale

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.