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Finding the Fourth Proportional to 243,612.80, 364,900.80 and 202,140.80

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Solution

The fourth proportional to 243,612.80, 364,900.80 and 202,140.80 is: 302,781.05

Step by Step Solution

  1. Step 1: Write the proportion equation
    243,612.80 : 364,900.80 = 202,140.80 : x
  2. Step 2: Convert to fraction form
    243,612.80/364,900.80 = 202,140.80/x
  3. Step 3: Cross multiply
    243,612.80x = 364,900.80 × 202,140.80
  4. Step 4: Simplify right side
    243,612.80x = 73,761,339,632.64
  5. Step 5: Solve for x
    x = 73,761,339,632.64/243,612.80
  6. Step 6: Final answer
    x = 302,781.05

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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.