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Finding the Fourth Proportional to 218,473.36, 301,493.88 and 122,981.52

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Solution

The fourth proportional to 218,473.36, 301,493.88 and 122,981.52 is: 169,714.86

Step by Step Solution

  1. Step 1: Write the proportion equation
    218,473.36 : 301,493.88 = 122,981.52 : x
  2. Step 2: Convert to fraction form
    218,473.36/301,493.88 = 122,981.52/x
  3. Step 3: Cross multiply
    218,473.36x = 301,493.88 × 122,981.52
  4. Step 4: Simplify right side
    218,473.36x = 37,078,175,633.10
  5. Step 5: Solve for x
    x = 37,078,175,633.10/218,473.36
  6. Step 6: Final answer
    x = 169,714.86

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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.