Home / 325,861,987.60-489,359,851.80-172,806,979.60

Finding the Fourth Proportional to 325,861,987.60, 489,359,851.80 and 172,806,979.60

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Solution

The fourth proportional to 325,861,987.60, 489,359,851.80 and 172,806,979.60 is: 259,511,084.89

Step by Step Solution

  1. Step 1: Write the proportion equation
    325,861,987.60 : 489,359,851.80 = 172,806,979.60 : x
  2. Step 2: Convert to fraction form
    325,861,987.60/489,359,851.80 = 172,806,979.60/x
  3. Step 3: Cross multiply
    325,861,987.60x = 489,359,851.80 × 172,806,979.60
  4. Step 4: Simplify right side
    325,861,987.60x = 84,564,797,927,061,616
  5. Step 5: Solve for x
    x = 84,564,797,927,061,616/325,861,987.60
  6. Step 6: Final answer
    x = 259,511,084.89

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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.