Home / 448,325.12-618,338.67-287,195.15

Finding the Fourth Proportional to 448,325.12, 618,338.67 and 287,195.15

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Solution

The fourth proportional to 448,325.12, 618,338.67 and 287,195.15 is: 396,105.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    448,325.12 : 618,338.67 = 287,195.15 : x
  2. Step 2: Convert to fraction form
    448,325.12/618,338.67 = 287,195.15/x
  3. Step 3: Cross multiply
    448,325.12x = 618,338.67 × 287,195.15
  4. Step 4: Simplify right side
    448,325.12x = 177,583,867,081.45
  5. Step 5: Solve for x
    x = 177,583,867,081.45/448,325.12
  6. Step 6: Final answer
    x = 396,105.10

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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.