Home / 259,936,019.60-389,904,029.40-258,144,429.20

Finding the Fourth Proportional to 259,936,019.60, 389,904,029.40 and 258,144,429.20

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Solution

The fourth proportional to 259,936,019.60, 389,904,029.40 and 258,144,429.20 is: 387,216,643.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    259,936,019.60 : 389,904,029.40 = 258,144,429.20 : x
  2. Step 2: Convert to fraction form
    259,936,019.60/389,904,029.40 = 258,144,429.20/x
  3. Step 3: Cross multiply
    259,936,019.60x = 389,904,029.40 × 258,144,429.20
  4. Step 4: Simplify right side
    259,936,019.60x = 100,651,553,112,243,008
  5. Step 5: Solve for x
    x = 100,651,553,112,243,008/259,936,019.60
  6. Step 6: Final answer
    x = 387,216,643.80

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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.