Home / 287,634.12-431,645.58-100,647.24

Finding the Fourth Proportional to 287,634.12, 431,645.58 and 100,647.24

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Solution

The fourth proportional to 287,634.12, 431,645.58 and 100,647.24 is: 151,038.88

Step by Step Solution

  1. Step 1: Write the proportion equation
    287,634.12 : 431,645.58 = 100,647.24 : x
  2. Step 2: Convert to fraction form
    287,634.12/431,645.58 = 100,647.24/x
  3. Step 3: Cross multiply
    287,634.12x = 431,645.58 × 100,647.24
  4. Step 4: Simplify right side
    287,634.12x = 43,443,936,285.20
  5. Step 5: Solve for x
    x = 43,443,936,285.20/287,634.12
  6. Step 6: Final answer
    x = 151,038.88

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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.