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Finding the Fourth Proportional to 243,028.20, 340,589.40 and 243,028.20

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Solution

The fourth proportional to 243,028.20, 340,589.40 and 243,028.20 is: 340,589.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    243,028.20 : 340,589.40 = 243,028.20 : x
  2. Step 2: Convert to fraction form
    243,028.20/340,589.40 = 243,028.20/x
  3. Step 3: Cross multiply
    243,028.20x = 340,589.40 × 243,028.20
  4. Step 4: Simplify right side
    243,028.20x = 82,772,828,821.08
  5. Step 5: Solve for x
    x = 82,772,828,821.08/243,028.20
  6. Step 6: Final answer
    x = 340,589.40

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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.