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Finding the Fourth Proportional to 379,315.08, 568,968.54 and 219,289.20

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Solution

The fourth proportional to 379,315.08, 568,968.54 and 219,289.20 is: 328,931.44

Step by Step Solution

  1. Step 1: Write the proportion equation
    379,315.08 : 568,968.54 = 219,289.20 : x
  2. Step 2: Convert to fraction form
    379,315.08/568,968.54 = 219,289.20/x
  3. Step 3: Cross multiply
    379,315.08x = 568,968.54 × 219,289.20
  4. Step 4: Simplify right side
    379,315.08x = 124,768,655,961.77
  5. Step 5: Solve for x
    x = 124,768,655,961.77/379,315.08
  6. Step 6: Final answer
    x = 328,931.44

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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.