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Finding the Fourth Proportional to 340,795.80, 470,300.14 and 197,640.76

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Solution

The fourth proportional to 340,795.80, 470,300.14 and 197,640.76 is: 272,745.37

Step by Step Solution

  1. Step 1: Write the proportion equation
    340,795.80 : 470,300.14 = 197,640.76 : x
  2. Step 2: Convert to fraction form
    340,795.80/470,300.14 = 197,640.76/x
  3. Step 3: Cross multiply
    340,795.80x = 470,300.14 × 197,640.76
  4. Step 4: Simplify right side
    340,795.80x = 92,950,477,097.71
  5. Step 5: Solve for x
    x = 92,950,477,097.71/340,795.80
  6. Step 6: Final answer
    x = 272,745.37

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.