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Finding the Fourth Proportional to 455,211.90, 682,052.40 and 360,077.40

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Solution

The fourth proportional to 455,211.90, 682,052.40 and 360,077.40 is: 539,510.62

Step by Step Solution

  1. Step 1: Write the proportion equation
    455,211.90 : 682,052.40 = 360,077.40 : x
  2. Step 2: Convert to fraction form
    455,211.90/682,052.40 = 360,077.40/x
  3. Step 3: Cross multiply
    455,211.90x = 682,052.40 × 360,077.40
  4. Step 4: Simplify right side
    455,211.90x = 245,591,654,855.76
  5. Step 5: Solve for x
    x = 245,591,654,855.76/455,211.90
  6. Step 6: Final answer
    x = 539,510.62

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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.