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Finding the Fourth Proportional to 313,966.46, 470,966.04 and 103,620.80

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Solution

The fourth proportional to 313,966.46, 470,966.04 and 103,620.80 is: 155,436.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    313,966.46 : 470,966.04 = 103,620.80 : x
  2. Step 2: Convert to fraction form
    313,966.46/470,966.04 = 103,620.80/x
  3. Step 3: Cross multiply
    313,966.46x = 470,966.04 × 103,620.80
  4. Step 4: Simplify right side
    313,966.46x = 48,801,877,837.63
  5. Step 5: Solve for x
    x = 48,801,877,837.63/313,966.46
  6. Step 6: Final answer
    x = 155,436.60

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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.