Home / 281,010,653.40-421,515,980.10-178,848,010.20

Finding the Fourth Proportional to 281,010,653.40, 421,515,980.10 and 178,848,010.20

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Solution

The fourth proportional to 281,010,653.40, 421,515,980.10 and 178,848,010.20 is: 268,272,015.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    281,010,653.40 : 421,515,980.10 = 178,848,010.20 : x
  2. Step 2: Convert to fraction form
    281,010,653.40/421,515,980.10 = 178,848,010.20/x
  3. Step 3: Cross multiply
    281,010,653.40x = 421,515,980.10 × 178,848,010.20
  4. Step 4: Simplify right side
    281,010,653.40x = 75,387,294,308,387,792
  5. Step 5: Solve for x
    x = 75,387,294,308,387,792/281,010,653.40
  6. Step 6: Final answer
    x = 268,272,015.30

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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.