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Finding the Fourth Proportional to 236,830.70, 355,246.05 and 211,025.90

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Solution

The fourth proportional to 236,830.70, 355,246.05 and 211,025.90 is: 316,538.85

Step by Step Solution

  1. Step 1: Write the proportion equation
    236,830.70 : 355,246.05 = 211,025.90 : x
  2. Step 2: Convert to fraction form
    236,830.70/355,246.05 = 211,025.90/x
  3. Step 3: Cross multiply
    236,830.70x = 355,246.05 × 211,025.90
  4. Step 4: Simplify right side
    236,830.70x = 74,966,117,422.70
  5. Step 5: Solve for x
    x = 74,966,117,422.70/236,830.70
  6. Step 6: Final answer
    x = 316,538.85

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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.