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Finding the Fourth Proportional to 219,208.75, 302,508.29 and 123,713.40

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Solution

The fourth proportional to 219,208.75, 302,508.29 and 123,713.40 is: 170,724.61

Step by Step Solution

  1. Step 1: Write the proportion equation
    219,208.75 : 302,508.29 = 123,713.40 : x
  2. Step 2: Convert to fraction form
    219,208.75/302,508.29 = 123,713.40/x
  3. Step 3: Cross multiply
    219,208.75x = 302,508.29 × 123,713.40
  4. Step 4: Simplify right side
    219,208.75x = 37,424,329,084.09
  5. Step 5: Solve for x
    x = 37,424,329,084.09/219,208.75
  6. Step 6: Final answer
    x = 170,724.61

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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.