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Finding the Fourth Proportional to 368,967.72, 553,451.46 and 211,085.40

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Solution

The fourth proportional to 368,967.72, 553,451.46 and 211,085.40 is: 316,628.03

Step by Step Solution

  1. Step 1: Write the proportion equation
    368,967.72 : 553,451.46 = 211,085.40 : x
  2. Step 2: Convert to fraction form
    368,967.72/553,451.46 = 211,085.40/x
  3. Step 3: Cross multiply
    368,967.72x = 553,451.46 × 211,085.40
  4. Step 4: Simplify right side
    368,967.72x = 116,825,522,814.68
  5. Step 5: Solve for x
    x = 116,825,522,814.68/368,967.72
  6. Step 6: Final answer
    x = 316,628.03

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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.