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Finding the Fourth Proportional to 186,714, 280,071 and 55,386

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Solution

The fourth proportional to 186,714, 280,071 and 55,386 is: 83,079

Step by Step Solution

  1. Step 1: Write the proportion equation
    186,714 : 280,071 = 55,386 : x
  2. Step 2: Convert to fraction form
    186,714/280,071 = 55,386/x
  3. Step 3: Cross multiply
    186,714x = 280,071 × 55,386
  4. Step 4: Simplify right side
    186,714x = 15,512,012,406
  5. Step 5: Solve for x
    x = 15,512,012,406/186,714
  6. Step 6: Final answer
    x = 83,079

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These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.