Home / 280,923,640.56-387,671,768.28-155,476,080.18

Finding the Fourth Proportional to 280,923,640.56, 387,671,768.28 and 155,476,080.18

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Solution

The fourth proportional to 280,923,640.56, 387,671,768.28 and 155,476,080.18 is: 214,555,410.18

Step by Step Solution

  1. Step 1: Write the proportion equation
    280,923,640.56 : 387,671,768.28 = 155,476,080.18 : x
  2. Step 2: Convert to fraction form
    280,923,640.56/387,671,768.28 = 155,476,080.18/x
  3. Step 3: Cross multiply
    280,923,640.56x = 387,671,768.28 × 155,476,080.18
  4. Step 4: Simplify right side
    280,923,640.56x = 60,273,686,928,623,656
  5. Step 5: Solve for x
    x = 60,273,686,928,623,656/280,923,640.56
  6. Step 6: Final answer
    x = 214,555,410.18

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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.