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Finding the Fourth Proportional to 219,805.92, 303,348.47 and 123,019.47

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Solution

The fourth proportional to 219,805.92, 303,348.47 and 123,019.47 is: 169,775.99

Step by Step Solution

  1. Step 1: Write the proportion equation
    219,805.92 : 303,348.47 = 123,019.47 : x
  2. Step 2: Convert to fraction form
    219,805.92/303,348.47 = 123,019.47/x
  3. Step 3: Cross multiply
    219,805.92x = 303,348.47 × 123,019.47
  4. Step 4: Simplify right side
    219,805.92x = 37,317,767,389.61
  5. Step 5: Solve for x
    x = 37,317,767,389.61/219,805.92
  6. Step 6: Final answer
    x = 169,775.99

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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.