Home / 303,722,138.72-455,749,061.16-128,817,966.80

Finding the Fourth Proportional to 303,722,138.72, 455,749,061.16 and 128,817,966.80

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Solution

The fourth proportional to 303,722,138.72, 455,749,061.16 and 128,817,966.80 is: 193,297,293.63

Step by Step Solution

  1. Step 1: Write the proportion equation
    303,722,138.72 : 455,749,061.16 = 128,817,966.80 : x
  2. Step 2: Convert to fraction form
    303,722,138.72/455,749,061.16 = 128,817,966.80/x
  3. Step 3: Cross multiply
    303,722,138.72x = 455,749,061.16 × 128,817,966.80
  4. Step 4: Simplify right side
    303,722,138.72x = 58,708,667,429,640,048
  5. Step 5: Solve for x
    x = 58,708,667,429,640,048/303,722,138.72
  6. Step 6: Final answer
    x = 193,297,293.63

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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.