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Finding the Fourth Proportional to 218,802.46, 328,174.50 and 61,017.70

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Solution

The fourth proportional to 218,802.46, 328,174.50 and 61,017.70 is: 91,518.41

Step by Step Solution

  1. Step 1: Write the proportion equation
    218,802.46 : 328,174.50 = 61,017.70 : x
  2. Step 2: Convert to fraction form
    218,802.46/328,174.50 = 61,017.70/x
  3. Step 3: Cross multiply
    218,802.46x = 328,174.50 × 61,017.70
  4. Step 4: Simplify right side
    218,802.46x = 20,024,453,188.65
  5. Step 5: Solve for x
    x = 20,024,453,188.65/218,802.46
  6. Step 6: Final answer
    x = 91,518.41

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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.