Home / 286,869.06-430,499.61-99,880.56

Finding the Fourth Proportional to 286,869.06, 430,499.61 and 99,880.56

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Solution

The fourth proportional to 286,869.06, 430,499.61 and 99,880.56 is: 149,889.09

Step by Step Solution

  1. Step 1: Write the proportion equation
    286,869.06 : 430,499.61 = 99,880.56 : x
  2. Step 2: Convert to fraction form
    286,869.06/430,499.61 = 99,880.56/x
  3. Step 3: Cross multiply
    286,869.06x = 430,499.61 × 99,880.56
  4. Step 4: Simplify right side
    286,869.06x = 42,998,542,126.58
  5. Step 5: Solve for x
    x = 42,998,542,126.58/286,869.06
  6. Step 6: Final answer
    x = 149,889.09

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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.