Home / 291,345,919.20-437,018,878.80-199,512,914.40

Finding the Fourth Proportional to 291,345,919.20, 437,018,878.80 and 199,512,914.40

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Solution

The fourth proportional to 291,345,919.20, 437,018,878.80 and 199,512,914.40 is: 299,269,371.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    291,345,919.20 : 437,018,878.80 = 199,512,914.40 : x
  2. Step 2: Convert to fraction form
    291,345,919.20/437,018,878.80 = 199,512,914.40/x
  3. Step 3: Cross multiply
    291,345,919.20x = 437,018,878.80 × 199,512,914.40
  4. Step 4: Simplify right side
    291,345,919.20x = 87,190,910,157,208,384
  5. Step 5: Solve for x
    x = 87,190,910,157,208,384/291,345,919.20
  6. Step 6: Final answer
    x = 299,269,371.60

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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.