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Finding the Fourth Proportional to 218,297.74, 301,248 and 122,804.40

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Solution

The fourth proportional to 218,297.74, 301,248 and 122,804.40 is: 169,468.45

Step by Step Solution

  1. Step 1: Write the proportion equation
    218,297.74 : 301,248 = 122,804.40 : x
  2. Step 2: Convert to fraction form
    218,297.74/301,248 = 122,804.40/x
  3. Step 3: Cross multiply
    218,297.74x = 301,248 × 122,804.40
  4. Step 4: Simplify right side
    218,297.74x = 36,994,579,891.20
  5. Step 5: Solve for x
    x = 36,994,579,891.20/218,297.74
  6. Step 6: Final answer
    x = 169,468.45

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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.