Home / 286,785,768.83-428,546,059.02-215,334,765.05

Finding the Fourth Proportional to 286,785,768.83, 428,546,059.02 and 215,334,765.05

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Solution

The fourth proportional to 286,785,768.83, 428,546,059.02 and 215,334,765.05 is: 321,776,304.69

Step by Step Solution

  1. Step 1: Write the proportion equation
    286,785,768.83 : 428,546,059.02 = 215,334,765.05 : x
  2. Step 2: Convert to fraction form
    286,785,768.83/428,546,059.02 = 215,334,765.05/x
  3. Step 3: Cross multiply
    286,785,768.83x = 428,546,059.02 × 215,334,765.05
  4. Step 4: Simplify right side
    286,785,768.83x = 92,280,864,930,032,400
  5. Step 5: Solve for x
    x = 92,280,864,930,032,400/286,785,768.83
  6. Step 6: Final answer
    x = 321,776,304.69

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Why These Related Problems?

These problems maintain the same ratio (1.49) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.