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Finding the Fourth Proportional to 313,801.80, 470,411.10 and 219,031.80

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Solution

The fourth proportional to 313,801.80, 470,411.10 and 219,031.80 is: 328,344.16

Step by Step Solution

  1. Step 1: Write the proportion equation
    313,801.80 : 470,411.10 = 219,031.80 : x
  2. Step 2: Convert to fraction form
    313,801.80/470,411.10 = 219,031.80/x
  3. Step 3: Cross multiply
    313,801.80x = 470,411.10 × 219,031.80
  4. Step 4: Simplify right side
    313,801.80x = 103,034,989,972.98
  5. Step 5: Solve for x
    x = 103,034,989,972.98/313,801.80
  6. Step 6: Final answer
    x = 328,344.16

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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.