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Finding the Fourth Proportional to 218,502.63, 301,533.30 and 123,040.08

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Solution

The fourth proportional to 218,502.63, 301,533.30 and 123,040.08 is: 169,795.12

Step by Step Solution

  1. Step 1: Write the proportion equation
    218,502.63 : 301,533.30 = 123,040.08 : x
  2. Step 2: Convert to fraction form
    218,502.63/301,533.30 = 123,040.08/x
  3. Step 3: Cross multiply
    218,502.63x = 301,533.30 × 123,040.08
  4. Step 4: Simplify right side
    218,502.63x = 37,100,681,354.66
  5. Step 5: Solve for x
    x = 37,100,681,354.66/218,502.63
  6. Step 6: Final answer
    x = 169,795.12

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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.