Home / 285,466,961.40-428,200,442.10-91,384,708.20

Finding the Fourth Proportional to 285,466,961.40, 428,200,442.10 and 91,384,708.20

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Solution

The fourth proportional to 285,466,961.40, 428,200,442.10 and 91,384,708.20 is: 137,077,062.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    285,466,961.40 : 428,200,442.10 = 91,384,708.20 : x
  2. Step 2: Convert to fraction form
    285,466,961.40/428,200,442.10 = 91,384,708.20/x
  3. Step 3: Cross multiply
    285,466,961.40x = 428,200,442.10 × 91,384,708.20
  4. Step 4: Simplify right side
    285,466,961.40x = 39,130,972,452,419,496
  5. Step 5: Solve for x
    x = 39,130,972,452,419,496/285,466,961.40
  6. Step 6: Final answer
    x = 137,077,062.30

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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.