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Finding the Fourth Proportional to 219,211.30, 328,816.95 and 219,211.30

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Solution

The fourth proportional to 219,211.30, 328,816.95 and 219,211.30 is: 328,816.95

Step by Step Solution

  1. Step 1: Write the proportion equation
    219,211.30 : 328,816.95 = 219,211.30 : x
  2. Step 2: Convert to fraction form
    219,211.30/328,816.95 = 219,211.30/x
  3. Step 3: Cross multiply
    219,211.30x = 328,816.95 × 219,211.30
  4. Step 4: Simplify right side
    219,211.30x = 72,080,391,071.54
  5. Step 5: Solve for x
    x = 72,080,391,071.54/219,211.30
  6. Step 6: Final answer
    x = 328,816.95

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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.