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Finding the Fourth Proportional to 212,590.71, 318,667.31 and 94,317.75

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Solution

The fourth proportional to 212,590.71, 318,667.31 and 94,317.75 is: 141,379.57

Step by Step Solution

  1. Step 1: Write the proportion equation
    212,590.71 : 318,667.31 = 94,317.75 : x
  2. Step 2: Convert to fraction form
    212,590.71/318,667.31 = 94,317.75/x
  3. Step 3: Cross multiply
    212,590.71x = 318,667.31 × 94,317.75
  4. Step 4: Simplify right side
    212,590.71x = 30,055,983,206.16
  5. Step 5: Solve for x
    x = 30,055,983,206.16/212,590.71
  6. Step 6: Final answer
    x = 141,379.57

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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.