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Finding the Fourth Proportional to 353,785.04, 488,158.49 and 208,636.35

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Solution

The fourth proportional to 353,785.04, 488,158.49 and 208,636.35 is: 287,879.91

Step by Step Solution

  1. Step 1: Write the proportion equation
    353,785.04 : 488,158.49 = 208,636.35 : x
  2. Step 2: Convert to fraction form
    353,785.04/488,158.49 = 208,636.35/x
  3. Step 3: Cross multiply
    353,785.04x = 488,158.49 × 208,636.35
  4. Step 4: Simplify right side
    353,785.04x = 101,847,606,362.52
  5. Step 5: Solve for x
    x = 101,847,606,362.52/353,785.04
  6. Step 6: Final answer
    x = 287,879.91

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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.