Home / 280,395,961.13-386,945,475-154,944,654.77

Finding the Fourth Proportional to 280,395,961.13, 386,945,475 and 154,944,654.77

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Solution

The fourth proportional to 280,395,961.13, 386,945,475 and 154,944,654.77 is: 213,823,097.87

Step by Step Solution

  1. Step 1: Write the proportion equation
    280,395,961.13 : 386,945,475 = 154,944,654.77 : x
  2. Step 2: Convert to fraction form
    280,395,961.13/386,945,475 = 154,944,654.77/x
  3. Step 3: Cross multiply
    280,395,961.13x = 386,945,475 × 154,944,654.77
  4. Step 4: Simplify right side
    280,395,961.13x = 59,955,133,036,753,936
  5. Step 5: Solve for x
    x = 59,955,133,036,753,936/280,395,961.13
  6. Step 6: Final answer
    x = 213,823,097.87

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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.