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Finding the Fourth Proportional to 212,470.78, 318,670.53 and 62,708.26

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Solution

The fourth proportional to 212,470.78, 318,670.53 and 62,708.26 is: 94,051.87

Step by Step Solution

  1. Step 1: Write the proportion equation
    212,470.78 : 318,670.53 = 62,708.26 : x
  2. Step 2: Convert to fraction form
    212,470.78/318,670.53 = 62,708.26/x
  3. Step 3: Cross multiply
    212,470.78x = 318,670.53 × 62,708.26
  4. Step 4: Simplify right side
    212,470.78x = 19,983,274,449.58
  5. Step 5: Solve for x
    x = 19,983,274,449.58/212,470.78
  6. Step 6: Final answer
    x = 94,051.87

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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.