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Finding the Fourth Proportional to 251,011,978.20, 376,517,967.30 and 89,395,594.20

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Solution

The fourth proportional to 251,011,978.20, 376,517,967.30 and 89,395,594.20 is: 134,093,391.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    251,011,978.20 : 376,517,967.30 = 89,395,594.20 : x
  2. Step 2: Convert to fraction form
    251,011,978.20/376,517,967.30 = 89,395,594.20/x
  3. Step 3: Cross multiply
    251,011,978.20x = 376,517,967.30 × 89,395,594.20
  4. Step 4: Simplify right side
    251,011,978.20x = 33,659,047,413,759,672
  5. Step 5: Solve for x
    x = 33,659,047,413,759,672/251,011,978.20
  6. Step 6: Final answer
    x = 134,093,391.30

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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.