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Finding the Fourth Proportional to 218,585.56, 301,642.16 and 123,090.20

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Solution

The fourth proportional to 218,585.56, 301,642.16 and 123,090.20 is: 169,861.15

Step by Step Solution

  1. Step 1: Write the proportion equation
    218,585.56 : 301,642.16 = 123,090.20 : x
  2. Step 2: Convert to fraction form
    218,585.56/301,642.16 = 123,090.20/x
  3. Step 3: Cross multiply
    218,585.56x = 301,642.16 × 123,090.20
  4. Step 4: Simplify right side
    218,585.56x = 37,129,193,802.83
  5. Step 5: Solve for x
    x = 37,129,193,802.83/218,585.56
  6. Step 6: Final answer
    x = 169,861.15

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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.