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Finding the Fourth Proportional to 243,755.20, 364,855.20 and 190,878.40

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Solution

The fourth proportional to 243,755.20, 364,855.20 and 190,878.40 is: 285,708.68

Step by Step Solution

  1. Step 1: Write the proportion equation
    243,755.20 : 364,855.20 = 190,878.40 : x
  2. Step 2: Convert to fraction form
    243,755.20/364,855.20 = 190,878.40/x
  3. Step 3: Cross multiply
    243,755.20x = 364,855.20 × 190,878.40
  4. Step 4: Simplify right side
    243,755.20x = 69,642,976,807.68
  5. Step 5: Solve for x
    x = 69,642,976,807.68/243,755.20
  6. Step 6: Final answer
    x = 285,708.68

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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.