Home / 279,605,989.76-419,408,623.04-75,134,068.16

Finding the Fourth Proportional to 279,605,989.76, 419,408,623.04 and 75,134,068.16

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Solution

The fourth proportional to 279,605,989.76, 419,408,623.04 and 75,134,068.16 is: 112,701,005.07

Step by Step Solution

  1. Step 1: Write the proportion equation
    279,605,989.76 : 419,408,623.04 = 75,134,068.16 : x
  2. Step 2: Convert to fraction form
    279,605,989.76/419,408,623.04 = 75,134,068.16/x
  3. Step 3: Cross multiply
    279,605,989.76x = 419,408,623.04 × 75,134,068.16
  4. Step 4: Simplify right side
    279,605,989.76x = 31,511,876,070,379,108
  5. Step 5: Solve for x
    x = 31,511,876,070,379,108/279,605,989.76
  6. Step 6: Final answer
    x = 112,701,005.07

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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.