Home / 287,380,010.30-431,070,015.45-82,914,755.90

Finding the Fourth Proportional to 287,380,010.30, 431,070,015.45 and 82,914,755.90

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Solution

The fourth proportional to 287,380,010.30, 431,070,015.45 and 82,914,755.90 is: 124,372,133.85

Step by Step Solution

  1. Step 1: Write the proportion equation
    287,380,010.30 : 431,070,015.45 = 82,914,755.90 : x
  2. Step 2: Convert to fraction form
    287,380,010.30/431,070,015.45 = 82,914,755.90/x
  3. Step 3: Cross multiply
    287,380,010.30x = 431,070,015.45 × 82,914,755.90
  4. Step 4: Simplify right side
    287,380,010.30x = 35,742,065,106,845,980
  5. Step 5: Solve for x
    x = 35,742,065,106,845,980/287,380,010.30
  6. Step 6: Final answer
    x = 124,372,133.85

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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.