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Finding the Fourth Proportional to 313,907.20, 470,246.40 and 188,876.80

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Solution

The fourth proportional to 313,907.20, 470,246.40 and 188,876.80 is: 282,945.52

Step by Step Solution

  1. Step 1: Write the proportion equation
    313,907.20 : 470,246.40 = 188,876.80 : x
  2. Step 2: Convert to fraction form
    313,907.20/470,246.40 = 188,876.80/x
  3. Step 3: Cross multiply
    313,907.20x = 470,246.40 × 188,876.80
  4. Step 4: Simplify right side
    313,907.20x = 88,818,635,243.52
  5. Step 5: Solve for x
    x = 88,818,635,243.52/313,907.20
  6. Step 6: Final answer
    x = 282,945.52

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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.