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Finding the Fourth Proportional to 230,071.91, 317,450.43 and 145,139.75

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Solution

The fourth proportional to 230,071.91, 317,450.43 and 145,139.75 is: 200,262.07

Step by Step Solution

  1. Step 1: Write the proportion equation
    230,071.91 : 317,450.43 = 145,139.75 : x
  2. Step 2: Convert to fraction form
    230,071.91/317,450.43 = 145,139.75/x
  3. Step 3: Cross multiply
    230,071.91x = 317,450.43 × 145,139.75
  4. Step 4: Simplify right side
    230,071.91x = 46,074,676,047.59
  5. Step 5: Solve for x
    x = 46,074,676,047.59/230,071.91
  6. Step 6: Final answer
    x = 200,262.07

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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.