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Finding the Fourth Proportional to 306,189.99, 458,422.29 and 231,071.40

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Solution

The fourth proportional to 306,189.99, 458,422.29 and 231,071.40 is: 345,956.05

Step by Step Solution

  1. Step 1: Write the proportion equation
    306,189.99 : 458,422.29 = 231,071.40 : x
  2. Step 2: Convert to fraction form
    306,189.99/458,422.29 = 231,071.40/x
  3. Step 3: Cross multiply
    306,189.99x = 458,422.29 × 231,071.40
  4. Step 4: Simplify right side
    306,189.99x = 105,928,280,341.51
  5. Step 5: Solve for x
    x = 105,928,280,341.51/306,189.99
  6. Step 6: Final answer
    x = 345,956.05

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1.5x scale

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.