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Finding the Fourth Proportional to 212,323.68, 318,487.95 and 72,093.24

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Solution

The fourth proportional to 212,323.68, 318,487.95 and 72,093.24 is: 108,140.69

Step by Step Solution

  1. Step 1: Write the proportion equation
    212,323.68 : 318,487.95 = 72,093.24 : x
  2. Step 2: Convert to fraction form
    212,323.68/318,487.95 = 72,093.24/x
  3. Step 3: Cross multiply
    212,323.68x = 318,487.95 × 72,093.24
  4. Step 4: Simplify right side
    212,323.68x = 22,960,828,216.46
  5. Step 5: Solve for x
    x = 22,960,828,216.46/212,323.68
  6. Step 6: Final answer
    x = 108,140.69

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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.