Home / 285,428,898.60-393,902,707.38-159,983,413.08

Finding the Fourth Proportional to 285,428,898.60, 393,902,707.38 and 159,983,413.08

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Solution

The fourth proportional to 285,428,898.60, 393,902,707.38 and 159,983,413.08 is: 220,783,178.78

Step by Step Solution

  1. Step 1: Write the proportion equation
    285,428,898.60 : 393,902,707.38 = 159,983,413.08 : x
  2. Step 2: Convert to fraction form
    285,428,898.60/393,902,707.38 = 159,983,413.08/x
  3. Step 3: Cross multiply
    285,428,898.60x = 393,902,707.38 × 159,983,413.08
  4. Step 4: Simplify right side
    285,428,898.60x = 63,017,899,548,104,912
  5. Step 5: Solve for x
    x = 63,017,899,548,104,912/285,428,898.60
  6. Step 6: Final answer
    x = 220,783,178.78

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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.