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Finding the Fourth Proportional to 343,603.42, 515,278.77 and 118,906.18

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Solution

The fourth proportional to 343,603.42, 515,278.77 and 118,906.18 is: 178,315.54

Step by Step Solution

  1. Step 1: Write the proportion equation
    343,603.42 : 515,278.77 = 118,906.18 : x
  2. Step 2: Convert to fraction form
    343,603.42/515,278.77 = 118,906.18/x
  3. Step 3: Cross multiply
    343,603.42x = 515,278.77 × 118,906.18
  4. Step 4: Simplify right side
    343,603.42x = 61,269,830,175.80
  5. Step 5: Solve for x
    x = 61,269,830,175.80/343,603.42
  6. Step 6: Final answer
    x = 178,315.54

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1.5x scale

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.