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Finding the Fourth Proportional to 212,038.62, 318,008.70 and 62,238.68

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Solution

The fourth proportional to 212,038.62, 318,008.70 and 62,238.68 is: 93,343.57

Step by Step Solution

  1. Step 1: Write the proportion equation
    212,038.62 : 318,008.70 = 62,238.68 : x
  2. Step 2: Convert to fraction form
    212,038.62/318,008.70 = 62,238.68/x
  3. Step 3: Cross multiply
    212,038.62x = 318,008.70 × 62,238.68
  4. Step 4: Simplify right side
    212,038.62x = 19,792,441,716.52
  5. Step 5: Solve for x
    x = 19,792,441,716.52/212,038.62
  6. Step 6: Final answer
    x = 93,343.57

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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.