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Finding the Fourth Proportional to 245,315.20, 367,972.80 and 214,211.20

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Solution

The fourth proportional to 245,315.20, 367,972.80 and 214,211.20 is: 321,316.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    245,315.20 : 367,972.80 = 214,211.20 : x
  2. Step 2: Convert to fraction form
    245,315.20/367,972.80 = 214,211.20/x
  3. Step 3: Cross multiply
    245,315.20x = 367,972.80 × 214,211.20
  4. Step 4: Simplify right side
    245,315.20x = 78,823,895,055.36
  5. Step 5: Solve for x
    x = 78,823,895,055.36/245,315.20
  6. Step 6: Final answer
    x = 321,316.80

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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.