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Finding the Fourth Proportional to 218,830.70, 328,246.05 and 183,838.70

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Solution

The fourth proportional to 218,830.70, 328,246.05 and 183,838.70 is: 275,758.05

Step by Step Solution

  1. Step 1: Write the proportion equation
    218,830.70 : 328,246.05 = 183,838.70 : x
  2. Step 2: Convert to fraction form
    218,830.70/328,246.05 = 183,838.70/x
  3. Step 3: Cross multiply
    218,830.70x = 328,246.05 × 183,838.70
  4. Step 4: Simplify right side
    218,830.70x = 60,344,327,112.14
  5. Step 5: Solve for x
    x = 60,344,327,112.14/218,830.70
  6. Step 6: Final answer
    x = 275,758.05

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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.