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Finding the Fourth Proportional to 313,818.80, 470,436.60 and 219,048.80

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Solution

The fourth proportional to 313,818.80, 470,436.60 and 219,048.80 is: 328,369.66

Step by Step Solution

  1. Step 1: Write the proportion equation
    313,818.80 : 470,436.60 = 219,048.80 : x
  2. Step 2: Convert to fraction form
    313,818.80/470,436.60 = 219,048.80/x
  3. Step 3: Cross multiply
    313,818.80x = 470,436.60 × 219,048.80
  4. Step 4: Simplify right side
    313,818.80x = 103,048,572,706.08
  5. Step 5: Solve for x
    x = 103,048,572,706.08/313,818.80
  6. Step 6: Final answer
    x = 328,369.66

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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.