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Finding the Fourth Proportional to 218,820.89, 301,972.80 and 118,218.89

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Solution

The fourth proportional to 218,820.89, 301,972.80 and 118,218.89 is: 163,142.05

Step by Step Solution

  1. Step 1: Write the proportion equation
    218,820.89 : 301,972.80 = 118,218.89 : x
  2. Step 2: Convert to fraction form
    218,820.89/301,972.80 = 118,218.89/x
  3. Step 3: Cross multiply
    218,820.89x = 301,972.80 × 118,218.89
  4. Step 4: Simplify right side
    218,820.89x = 35,698,889,226.19
  5. Step 5: Solve for x
    x = 35,698,889,226.19/218,820.89
  6. Step 6: Final answer
    x = 163,142.05

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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.