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Finding the Fourth Proportional to 287,518.88, 429,256.66 and 219,695.96

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Solution

The fourth proportional to 287,518.88, 429,256.66 and 219,695.96 is: 327,999.17

Step by Step Solution

  1. Step 1: Write the proportion equation
    287,518.88 : 429,256.66 = 219,695.96 : x
  2. Step 2: Convert to fraction form
    287,518.88/429,256.66 = 219,695.96/x
  3. Step 3: Cross multiply
    287,518.88x = 429,256.66 × 219,695.96
  4. Step 4: Simplify right side
    287,518.88x = 94,305,954,005.09
  5. Step 5: Solve for x
    x = 94,305,954,005.09/287,518.88
  6. Step 6: Final answer
    x = 327,999.17

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Why These Related Problems?

These problems maintain the same ratio (1.49) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.