Home / 215,327,906.87-297,113,314.75-121,227,420.47

Finding the Fourth Proportional to 215,327,906.87, 297,113,314.75 and 121,227,420.47

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Solution

The fourth proportional to 215,327,906.87, 297,113,314.75 and 121,227,420.47 is: 167,271,772.88

Step by Step Solution

  1. Step 1: Write the proportion equation
    215,327,906.87 : 297,113,314.75 = 121,227,420.47 : x
  2. Step 2: Convert to fraction form
    215,327,906.87/297,113,314.75 = 121,227,420.47/x
  3. Step 3: Cross multiply
    215,327,906.87x = 297,113,314.75 × 121,227,420.47
  4. Step 4: Simplify right side
    215,327,906.87x = 36,018,280,732,645,068
  5. Step 5: Solve for x
    x = 36,018,280,732,645,068/215,327,906.87
  6. Step 6: Final answer
    x = 167,271,772.88

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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.