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Finding the Fourth Proportional to 470,383.80, 705,057.30 and 260,172.60

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Solution

The fourth proportional to 470,383.80, 705,057.30 and 260,172.60 is: 389,972.17

Step by Step Solution

  1. Step 1: Write the proportion equation
    470,383.80 : 705,057.30 = 260,172.60 : x
  2. Step 2: Convert to fraction form
    470,383.80/705,057.30 = 260,172.60/x
  3. Step 3: Cross multiply
    470,383.80x = 705,057.30 × 260,172.60
  4. Step 4: Simplify right side
    470,383.80x = 183,436,590,889.98
  5. Step 5: Solve for x
    x = 183,436,590,889.98/470,383.80
  6. Step 6: Final answer
    x = 389,972.17

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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.