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Finding the Fourth Proportional to 223,947.09, 309,047.00 and 123,345.09

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Solution

The fourth proportional to 223,947.09, 309,047.00 and 123,345.09 is: 170,216.23

Step by Step Solution

  1. Step 1: Write the proportion equation
    223,947.09 : 309,047.00 = 123,345.09 : x
  2. Step 2: Convert to fraction form
    223,947.09/309,047.00 = 123,345.09/x
  3. Step 3: Cross multiply
    223,947.09x = 309,047.00 × 123,345.09
  4. Step 4: Simplify right side
    223,947.09x = 38,119,430,571.43
  5. Step 5: Solve for x
    x = 38,119,430,571.43/223,947.09
  6. Step 6: Final answer
    x = 170,216.23

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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.