Home / 303,722,378.10-455,749,420.77-128,818,206.90

Finding the Fourth Proportional to 303,722,378.10, 455,749,420.77 and 128,818,206.90

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Solution

The fourth proportional to 303,722,378.10, 455,749,420.77 and 128,818,206.90 is: 193,297,654.08

Step by Step Solution

  1. Step 1: Write the proportion equation
    303,722,378.10 : 455,749,420.77 = 128,818,206.90 : x
  2. Step 2: Convert to fraction form
    303,722,378.10/455,749,420.77 = 128,818,206.90/x
  3. Step 3: Cross multiply
    303,722,378.10x = 455,749,420.77 × 128,818,206.90
  4. Step 4: Simplify right side
    303,722,378.10x = 58,708,823,179,305,016
  5. Step 5: Solve for x
    x = 58,708,823,179,305,016/303,722,378.10
  6. Step 6: Final answer
    x = 193,297,654.08

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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.