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Finding the Fourth Proportional to 243,458.20, 364,531.20 and 190,970.20

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Solution

The fourth proportional to 243,458.20, 364,531.20 and 190,970.20 is: 285,940.65

Step by Step Solution

  1. Step 1: Write the proportion equation
    243,458.20 : 364,531.20 = 190,970.20 : x
  2. Step 2: Convert to fraction form
    243,458.20/364,531.20 = 190,970.20/x
  3. Step 3: Cross multiply
    243,458.20x = 364,531.20 × 190,970.20
  4. Step 4: Simplify right side
    243,458.20x = 69,614,596,170.24
  5. Step 5: Solve for x
    x = 69,614,596,170.24/243,458.20
  6. Step 6: Final answer
    x = 285,940.65

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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.