Home / 211,243.20-316,864.80-203,078.40

Finding the Fourth Proportional to 211,243.20, 316,864.80 and 203,078.40

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Solution

The fourth proportional to 211,243.20, 316,864.80 and 203,078.40 is: 304,617.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    211,243.20 : 316,864.80 = 203,078.40 : x
  2. Step 2: Convert to fraction form
    211,243.20/316,864.80 = 203,078.40/x
  3. Step 3: Cross multiply
    211,243.20x = 316,864.80 × 203,078.40
  4. Step 4: Simplify right side
    211,243.20x = 64,348,396,600.32
  5. Step 5: Solve for x
    x = 64,348,396,600.32/211,243.20
  6. Step 6: Final answer
    x = 304,617.60

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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.