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Finding the Fourth Proportional to 358,790.85, 538,172.78 and 88,919.78

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Solution

The fourth proportional to 358,790.85, 538,172.78 and 88,919.78 is: 133,376.32

Step by Step Solution

  1. Step 1: Write the proportion equation
    358,790.85 : 538,172.78 = 88,919.78 : x
  2. Step 2: Convert to fraction form
    358,790.85/538,172.78 = 88,919.78/x
  3. Step 3: Cross multiply
    358,790.85x = 538,172.78 × 88,919.78
  4. Step 4: Simplify right side
    358,790.85x = 47,854,202,064.13
  5. Step 5: Solve for x
    x = 47,854,202,064.13/358,790.85
  6. Step 6: Final answer
    x = 133,376.32

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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.