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Finding the Fourth Proportional to 221,003.09, 304,904.26 and 144,565.82

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Solution

The fourth proportional to 221,003.09, 304,904.26 and 144,565.82 is: 199,448.50

Step by Step Solution

  1. Step 1: Write the proportion equation
    221,003.09 : 304,904.26 = 144,565.82 : x
  2. Step 2: Convert to fraction form
    221,003.09/304,904.26 = 144,565.82/x
  3. Step 3: Cross multiply
    221,003.09x = 304,904.26 × 144,565.82
  4. Step 4: Simplify right side
    221,003.09x = 44,078,734,368.39
  5. Step 5: Solve for x
    x = 44,078,734,368.39/221,003.09
  6. Step 6: Final answer
    x = 199,448.50

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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.