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Finding the Fourth Proportional to 306,144.66, 459,208.51 and 81,507.03

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Solution

The fourth proportional to 306,144.66, 459,208.51 and 81,507.03 is: 122,258.28

Step by Step Solution

  1. Step 1: Write the proportion equation
    306,144.66 : 459,208.51 = 81,507.03 : x
  2. Step 2: Convert to fraction form
    306,144.66/459,208.51 = 81,507.03/x
  3. Step 3: Cross multiply
    306,144.66x = 459,208.51 × 81,507.03
  4. Step 4: Simplify right side
    306,144.66x = 37,428,719,875.03
  5. Step 5: Solve for x
    x = 37,428,719,875.03/306,144.66
  6. Step 6: Final answer
    x = 122,258.28

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.