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Finding the Fourth Proportional to 219,030.80, 328,546.20 and 144,381.20

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Solution

The fourth proportional to 219,030.80, 328,546.20 and 144,381.20 is: 216,571.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    219,030.80 : 328,546.20 = 144,381.20 : x
  2. Step 2: Convert to fraction form
    219,030.80/328,546.20 = 144,381.20/x
  3. Step 3: Cross multiply
    219,030.80x = 328,546.20 × 144,381.20
  4. Step 4: Simplify right side
    219,030.80x = 47,435,894,611.44
  5. Step 5: Solve for x
    x = 47,435,894,611.44/219,030.80
  6. Step 6: Final answer
    x = 216,571.80

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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.