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Finding the Fourth Proportional to 218,114.10, 300,997.93 and 122,621.58

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Solution

The fourth proportional to 218,114.10, 300,997.93 and 122,621.58 is: 169,218.05

Step by Step Solution

  1. Step 1: Write the proportion equation
    218,114.10 : 300,997.93 = 122,621.58 : x
  2. Step 2: Convert to fraction form
    218,114.10/300,997.93 = 122,621.58/x
  3. Step 3: Cross multiply
    218,114.10x = 300,997.93 × 122,621.58
  4. Step 4: Simplify right side
    218,114.10x = 36,908,842,812.38
  5. Step 5: Solve for x
    x = 36,908,842,812.38/218,114.10
  6. Step 6: Final answer
    x = 169,218.05

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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.