Home / 223,490.29-308,417.85-121,516.75

Finding the Fourth Proportional to 223,490.29, 308,417.85 and 121,516.75

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Solution

The fourth proportional to 223,490.29, 308,417.85 and 121,516.75 is: 167,693.79

Step by Step Solution

  1. Step 1: Write the proportion equation
    223,490.29 : 308,417.85 = 121,516.75 : x
  2. Step 2: Convert to fraction form
    223,490.29/308,417.85 = 121,516.75/x
  3. Step 3: Cross multiply
    223,490.29x = 308,417.85 × 121,516.75
  4. Step 4: Simplify right side
    223,490.29x = 37,477,934,773.99
  5. Step 5: Solve for x
    x = 37,477,934,773.99/223,490.29
  6. Step 6: Final answer
    x = 167,693.79

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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.