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Finding the Fourth Proportional to 219,205.45, 328,808.18 and 219,205.45

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Solution

The fourth proportional to 219,205.45, 328,808.18 and 219,205.45 is: 328,808.18

Step by Step Solution

  1. Step 1: Write the proportion equation
    219,205.45 : 328,808.18 = 219,205.45 : x
  2. Step 2: Convert to fraction form
    219,205.45/328,808.18 = 219,205.45/x
  3. Step 3: Cross multiply
    219,205.45x = 328,808.18 × 219,205.45
  4. Step 4: Simplify right side
    219,205.45x = 72,076,543,964.55
  5. Step 5: Solve for x
    x = 72,076,543,964.55/219,205.45
  6. Step 6: Final answer
    x = 328,808.18

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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.