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Finding the Fourth Proportional to 147,236, 220,854 and 36,428

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Solution

The fourth proportional to 147,236, 220,854 and 36,428 is: 54,642

Step by Step Solution

  1. Step 1: Write the proportion equation
    147,236 : 220,854 = 36,428 : x
  2. Step 2: Convert to fraction form
    147,236/220,854 = 36,428/x
  3. Step 3: Cross multiply
    147,236x = 220,854 × 36,428
  4. Step 4: Simplify right side
    147,236x = 8,045,269,512
  5. Step 5: Solve for x
    x = 8,045,269,512/147,236
  6. Step 6: Final answer
    x = 54,642

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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.