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Finding the Fourth Proportional to 374,492.20, 561,738.30 and 355,246.60

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Solution

The fourth proportional to 374,492.20, 561,738.30 and 355,246.60 is: 532,869.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    374,492.20 : 561,738.30 = 355,246.60 : x
  2. Step 2: Convert to fraction form
    374,492.20/561,738.30 = 355,246.60/x
  3. Step 3: Cross multiply
    374,492.20x = 561,738.30 × 355,246.60
  4. Step 4: Simplify right side
    374,492.20x = 199,555,621,164.78
  5. Step 5: Solve for x
    x = 199,555,621,164.78/374,492.20
  6. Step 6: Final answer
    x = 532,869.90

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Double scale
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Similar ratio
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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.