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Finding the Fourth Proportional to 212,511, 318,715.48 and 62,710.84

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Solution

The fourth proportional to 212,511, 318,715.48 and 62,710.84 is: 94,051.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    212,511 : 318,715.48 = 62,710.84 : x
  2. Step 2: Convert to fraction form
    212,511/318,715.48 = 62,710.84/x
  3. Step 3: Cross multiply
    212,511x = 318,715.48 × 62,710.84
  4. Step 4: Simplify right side
    212,511x = 19,986,915,471.80
  5. Step 5: Solve for x
    x = 19,986,915,471.80/212,511
  6. Step 6: Final answer
    x = 94,051.20

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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.