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Finding the Fourth Proportional to 455,220.90, 682,831.35 and 366,647.40

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Solution

The fourth proportional to 455,220.90, 682,831.35 and 366,647.40 is: 549,971.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    455,220.90 : 682,831.35 = 366,647.40 : x
  2. Step 2: Convert to fraction form
    455,220.90/682,831.35 = 366,647.40/x
  3. Step 3: Cross multiply
    455,220.90x = 682,831.35 × 366,647.40
  4. Step 4: Simplify right side
    455,220.90x = 250,358,339,115.99
  5. Step 5: Solve for x
    x = 250,358,339,115.99/455,220.90
  6. Step 6: Final answer
    x = 549,971.10

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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.