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Finding the Fourth Proportional to 374,441.40, 561,662.10 and 315,173.70

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Solution

The fourth proportional to 374,441.40, 561,662.10 and 315,173.70 is: 472,760.55

Step by Step Solution

  1. Step 1: Write the proportion equation
    374,441.40 : 561,662.10 = 315,173.70 : x
  2. Step 2: Convert to fraction form
    374,441.40/561,662.10 = 315,173.70/x
  3. Step 3: Cross multiply
    374,441.40x = 561,662.10 × 315,173.70
  4. Step 4: Simplify right side
    374,441.40x = 177,021,122,206.77
  5. Step 5: Solve for x
    x = 177,021,122,206.77/374,441.40
  6. Step 6: Final answer
    x = 472,760.55

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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.