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Finding the Fourth Proportional to 446,056.60, 669,084.90 and 257,099.80

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Solution

The fourth proportional to 446,056.60, 669,084.90 and 257,099.80 is: 385,649.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    446,056.60 : 669,084.90 = 257,099.80 : x
  2. Step 2: Convert to fraction form
    446,056.60/669,084.90 = 257,099.80/x
  3. Step 3: Cross multiply
    446,056.60x = 669,084.90 × 257,099.80
  4. Step 4: Simplify right side
    446,056.60x = 172,021,593,973.02
  5. Step 5: Solve for x
    x = 172,021,593,973.02/446,056.60
  6. Step 6: Final answer
    x = 385,649.70

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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.