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Finding the Fourth Proportional to 219,488.32, 328,968.16 and 100,997.44

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Solution

The fourth proportional to 219,488.32, 328,968.16 and 100,997.44 is: 151,374.53

Step by Step Solution

  1. Step 1: Write the proportion equation
    219,488.32 : 328,968.16 = 100,997.44 : x
  2. Step 2: Convert to fraction form
    219,488.32/328,968.16 = 100,997.44/x
  3. Step 3: Cross multiply
    219,488.32x = 328,968.16 × 100,997.44
  4. Step 4: Simplify right side
    219,488.32x = 33,224,942,001.51
  5. Step 5: Solve for x
    x = 33,224,942,001.51/219,488.32
  6. Step 6: Final answer
    x = 151,374.53

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1.5x scale

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.