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Finding the Fourth Proportional to 313,892.80, 470,817.60 and 100,657.60

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Solution

The fourth proportional to 313,892.80, 470,817.60 and 100,657.60 is: 150,979.47

Step by Step Solution

  1. Step 1: Write the proportion equation
    313,892.80 : 470,817.60 = 100,657.60 : x
  2. Step 2: Convert to fraction form
    313,892.80/470,817.60 = 100,657.60/x
  3. Step 3: Cross multiply
    313,892.80x = 470,817.60 × 100,657.60
  4. Step 4: Simplify right side
    313,892.80x = 47,391,369,653.76
  5. Step 5: Solve for x
    x = 47,391,369,653.76/313,892.80
  6. Step 6: Final answer
    x = 150,979.47

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1.5x scale

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.