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Finding the Fourth Proportional to 219,382.58, 329,005.82 and 79,122.98

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Solution

The fourth proportional to 219,382.58, 329,005.82 and 79,122.98 is: 118,659.93

Step by Step Solution

  1. Step 1: Write the proportion equation
    219,382.58 : 329,005.82 = 79,122.98 : x
  2. Step 2: Convert to fraction form
    219,382.58/329,005.82 = 79,122.98/x
  3. Step 3: Cross multiply
    219,382.58x = 329,005.82 × 79,122.98
  4. Step 4: Simplify right side
    219,382.58x = 26,031,920,915.74
  5. Step 5: Solve for x
    x = 26,031,920,915.74/219,382.58
  6. Step 6: Final answer
    x = 118,659.93

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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.