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Finding the Fourth Proportional to 218,984.80, 328,477.20 and 183,555.40

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Solution

The fourth proportional to 218,984.80, 328,477.20 and 183,555.40 is: 275,333.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    218,984.80 : 328,477.20 = 183,555.40 : x
  2. Step 2: Convert to fraction form
    218,984.80/328,477.20 = 183,555.40/x
  3. Step 3: Cross multiply
    218,984.80x = 328,477.20 × 183,555.40
  4. Step 4: Simplify right side
    218,984.80x = 60,293,763,836.88
  5. Step 5: Solve for x
    x = 60,293,763,836.88/218,984.80
  6. Step 6: Final answer
    x = 275,333.10

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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.