Home / 279,411.39-419,120.93-79,731.72

Finding the Fourth Proportional to 279,411.39, 419,120.93 and 79,731.72

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Solution

The fourth proportional to 279,411.39, 419,120.93 and 79,731.72 is: 119,598.67

Step by Step Solution

  1. Step 1: Write the proportion equation
    279,411.39 : 419,120.93 = 79,731.72 : x
  2. Step 2: Convert to fraction form
    279,411.39/419,120.93 = 79,731.72/x
  3. Step 3: Cross multiply
    279,411.39x = 419,120.93 × 79,731.72
  4. Step 4: Simplify right side
    279,411.39x = 33,417,230,541.30
  5. Step 5: Solve for x
    x = 33,417,230,541.30/279,411.39
  6. Step 6: Final answer
    x = 119,598.67

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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.