Home / 223,457.08-308,376.86-121,489.40

Finding the Fourth Proportional to 223,457.08, 308,376.86 and 121,489.40

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Solution

The fourth proportional to 223,457.08, 308,376.86 and 121,489.40 is: 167,658.68

Step by Step Solution

  1. Step 1: Write the proportion equation
    223,457.08 : 308,376.86 = 121,489.40 : x
  2. Step 2: Convert to fraction form
    223,457.08/308,376.86 = 121,489.40/x
  3. Step 3: Cross multiply
    223,457.08x = 308,376.86 × 121,489.40
  4. Step 4: Simplify right side
    223,457.08x = 37,464,519,858.78
  5. Step 5: Solve for x
    x = 37,464,519,858.78/223,457.08
  6. Step 6: Final answer
    x = 167,658.68

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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.