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Finding the Fourth Proportional to 374,031.20, 561,241.20 and 163,690.40

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Solution

The fourth proportional to 374,031.20, 561,241.20 and 163,690.40 is: 245,620.68

Step by Step Solution

  1. Step 1: Write the proportion equation
    374,031.20 : 561,241.20 = 163,690.40 : x
  2. Step 2: Convert to fraction form
    374,031.20/561,241.20 = 163,690.40/x
  3. Step 3: Cross multiply
    374,031.20x = 561,241.20 × 163,690.40
  4. Step 4: Simplify right side
    374,031.20x = 91,869,796,524.48
  5. Step 5: Solve for x
    x = 91,869,796,524.48/374,031.20
  6. Step 6: Final answer
    x = 245,620.68

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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.