Home / 279,343.90-419,055.22-89,740.70

Finding the Fourth Proportional to 279,343.90, 419,055.22 and 89,740.70

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Solution

The fourth proportional to 279,343.90, 419,055.22 and 89,740.70 is: 134,623.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    279,343.90 : 419,055.22 = 89,740.70 : x
  2. Step 2: Convert to fraction form
    279,343.90/419,055.22 = 89,740.70/x
  3. Step 3: Cross multiply
    279,343.90x = 419,055.22 × 89,740.70
  4. Step 4: Simplify right side
    279,343.90x = 37,606,308,781.45
  5. Step 5: Solve for x
    x = 37,606,308,781.45/279,343.90
  6. Step 6: Final answer
    x = 134,623.70

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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.