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Finding the Fourth Proportional to 217,671.98, 325,663.16 and 190,815.91

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Solution

The fourth proportional to 217,671.98, 325,663.16 and 190,815.91 is: 285,483.28

Step by Step Solution

  1. Step 1: Write the proportion equation
    217,671.98 : 325,663.16 = 190,815.91 : x
  2. Step 2: Convert to fraction form
    217,671.98/325,663.16 = 190,815.91/x
  3. Step 3: Cross multiply
    217,671.98x = 325,663.16 × 190,815.91
  4. Step 4: Simplify right side
    217,671.98x = 62,141,710,460.64
  5. Step 5: Solve for x
    x = 62,141,710,460.64/217,671.98
  6. Step 6: Final answer
    x = 285,483.28

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.