Home / 313,564.12-470,355.10-76,906.60

Finding the Fourth Proportional to 313,564.12, 470,355.10 and 76,906.60

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Solution

The fourth proportional to 313,564.12, 470,355.10 and 76,906.60 is: 115,362.09

Step by Step Solution

  1. Step 1: Write the proportion equation
    313,564.12 : 470,355.10 = 76,906.60 : x
  2. Step 2: Convert to fraction form
    313,564.12/470,355.10 = 76,906.60/x
  3. Step 3: Cross multiply
    313,564.12x = 470,355.10 × 76,906.60
  4. Step 4: Simplify right side
    313,564.12x = 36,173,411,533.66
  5. Step 5: Solve for x
    x = 36,173,411,533.66/313,564.12
  6. Step 6: Final answer
    x = 115,362.09

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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.