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Finding the Fourth Proportional to 225,020.55, 310,538.01 and 123,039.93

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Solution

The fourth proportional to 225,020.55, 310,538.01 and 123,039.93 is: 169,800.38

Step by Step Solution

  1. Step 1: Write the proportion equation
    225,020.55 : 310,538.01 = 123,039.93 : x
  2. Step 2: Convert to fraction form
    225,020.55/310,538.01 = 123,039.93/x
  3. Step 3: Cross multiply
    225,020.55x = 310,538.01 × 123,039.93
  4. Step 4: Simplify right side
    225,020.55x = 38,208,575,012.74
  5. Step 5: Solve for x
    x = 38,208,575,012.74/225,020.55
  6. Step 6: Final answer
    x = 169,800.38

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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.