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Finding the Fourth Proportional to 374,431.20, 561,646.80 and 108,200.40

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Solution

The fourth proportional to 374,431.20, 561,646.80 and 108,200.40 is: 162,300.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    374,431.20 : 561,646.80 = 108,200.40 : x
  2. Step 2: Convert to fraction form
    374,431.20/561,646.80 = 108,200.40/x
  3. Step 3: Cross multiply
    374,431.20x = 561,646.80 × 108,200.40
  4. Step 4: Simplify right side
    374,431.20x = 60,770,408,418.72
  5. Step 5: Solve for x
    x = 60,770,408,418.72/374,431.20
  6. Step 6: Final answer
    x = 162,300.60

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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.