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Finding the Fourth Proportional to 223,375.93, 308,261.16 and 121,401.40

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Solution

The fourth proportional to 223,375.93, 308,261.16 and 121,401.40 is: 167,535.22

Step by Step Solution

  1. Step 1: Write the proportion equation
    223,375.93 : 308,261.16 = 121,401.40 : x
  2. Step 2: Convert to fraction form
    223,375.93/308,261.16 = 121,401.40/x
  3. Step 3: Cross multiply
    223,375.93x = 308,261.16 × 121,401.40
  4. Step 4: Simplify right side
    223,375.93x = 37,423,336,389.62
  5. Step 5: Solve for x
    x = 37,423,336,389.62/223,375.93
  6. Step 6: Final answer
    x = 167,535.22

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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.