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Finding the Fourth Proportional to 245,028.20, 343,389.40 and 245,028.20

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Solution

The fourth proportional to 245,028.20, 343,389.40 and 245,028.20 is: 343,389.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    245,028.20 : 343,389.40 = 245,028.20 : x
  2. Step 2: Convert to fraction form
    245,028.20/343,389.40 = 245,028.20/x
  3. Step 3: Cross multiply
    245,028.20x = 343,389.40 × 245,028.20
  4. Step 4: Simplify right side
    245,028.20x = 84,140,086,581.08
  5. Step 5: Solve for x
    x = 84,140,086,581.08/245,028.20
  6. Step 6: Final answer
    x = 343,389.40

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.40) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.