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Finding the Fourth Proportional to 211,246.90, 316,918.35 and 71,019.70

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Solution

The fourth proportional to 211,246.90, 316,918.35 and 71,019.70 is: 106,545.69

Step by Step Solution

  1. Step 1: Write the proportion equation
    211,246.90 : 316,918.35 = 71,019.70 : x
  2. Step 2: Convert to fraction form
    211,246.90/316,918.35 = 71,019.70/x
  3. Step 3: Cross multiply
    211,246.90x = 316,918.35 × 71,019.70
  4. Step 4: Simplify right side
    211,246.90x = 22,507,446,141.50
  5. Step 5: Solve for x
    x = 22,507,446,141.50/211,246.90
  6. Step 6: Final answer
    x = 106,545.69

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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.