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Finding the Fourth Proportional to 223,323.64, 308,187.84 and 121,349.90

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Solution

The fourth proportional to 223,323.64, 308,187.84 and 121,349.90 is: 167,463.52

Step by Step Solution

  1. Step 1: Write the proportion equation
    223,323.64 : 308,187.84 = 121,349.90 : x
  2. Step 2: Convert to fraction form
    223,323.64/308,187.84 = 121,349.90/x
  3. Step 3: Cross multiply
    223,323.64x = 308,187.84 × 121,349.90
  4. Step 4: Simplify right side
    223,323.64x = 37,398,563,565.22
  5. Step 5: Solve for x
    x = 37,398,563,565.22/223,323.64
  6. Step 6: Final answer
    x = 167,463.52

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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.