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Finding the Fourth Proportional to 218,094.08, 300,968.15 and 121,298.81

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Solution

The fourth proportional to 218,094.08, 300,968.15 and 121,298.81 is: 167,391.42

Step by Step Solution

  1. Step 1: Write the proportion equation
    218,094.08 : 300,968.15 = 121,298.81 : x
  2. Step 2: Convert to fraction form
    218,094.08/300,968.15 = 121,298.81/x
  3. Step 3: Cross multiply
    218,094.08x = 300,968.15 × 121,298.81
  4. Step 4: Simplify right side
    218,094.08x = 36,507,076,331.57
  5. Step 5: Solve for x
    x = 36,507,076,331.57/218,094.08
  6. Step 6: Final answer
    x = 167,391.42

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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.