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Finding the Fourth Proportional to 218,863.52, 302,025.51 and 122,070.31

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Solution

The fourth proportional to 218,863.52, 302,025.51 and 122,070.31 is: 168,453.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    218,863.52 : 302,025.51 = 122,070.31 : x
  2. Step 2: Convert to fraction form
    218,863.52/302,025.51 = 122,070.31/x
  3. Step 3: Cross multiply
    218,863.52x = 302,025.51 × 122,070.31
  4. Step 4: Simplify right side
    218,863.52x = 36,868,346,878.54
  5. Step 5: Solve for x
    x = 36,868,346,878.54/218,863.52
  6. Step 6: Final answer
    x = 168,453.60

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1.5x scale

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.