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Finding the Fourth Proportional to 223,988.77, 309,104.54 and 123,386.77

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Solution

The fourth proportional to 223,988.77, 309,104.54 and 123,386.77 is: 170,273.76

Step by Step Solution

  1. Step 1: Write the proportion equation
    223,988.77 : 309,104.54 = 123,386.77 : x
  2. Step 2: Convert to fraction form
    223,988.77/309,104.54 = 123,386.77/x
  3. Step 3: Cross multiply
    223,988.77x = 309,104.54 × 123,386.77
  4. Step 4: Simplify right side
    223,988.77x = 38,139,410,782.94
  5. Step 5: Solve for x
    x = 38,139,410,782.94/223,988.77
  6. Step 6: Final answer
    x = 170,273.76

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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.