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Finding the Fourth Proportional to 358,745.57, 538,142.95 and 118,859

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Solution

The fourth proportional to 358,745.57, 538,142.95 and 118,859 is: 178,296.65

Step by Step Solution

  1. Step 1: Write the proportion equation
    358,745.57 : 538,142.95 = 118,859 : x
  2. Step 2: Convert to fraction form
    358,745.57/538,142.95 = 118,859/x
  3. Step 3: Cross multiply
    358,745.57x = 538,142.95 × 118,859
  4. Step 4: Simplify right side
    358,745.57x = 63,963,132,894.05
  5. Step 5: Solve for x
    x = 63,963,132,894.05/358,745.57
  6. Step 6: Final answer
    x = 178,296.65

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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.