Home / 448,478,105.40-672,238,861.20-172,022,497.20

Finding the Fourth Proportional to 448,478,105.40, 672,238,861.20 and 172,022,497.20

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Solution

The fourth proportional to 448,478,105.40, 672,238,861.20 and 172,022,497.20 is: 257,850,285.72

Step by Step Solution

  1. Step 1: Write the proportion equation
    448,478,105.40 : 672,238,861.20 = 172,022,497.20 : x
  2. Step 2: Convert to fraction form
    448,478,105.40/672,238,861.20 = 172,022,497.20/x
  3. Step 3: Cross multiply
    448,478,105.40x = 672,238,861.20 × 172,022,497.20
  4. Step 4: Simplify right side
    448,478,105.40x = 115,640,207,618,508,192
  5. Step 5: Solve for x
    x = 115,640,207,618,508,192/448,478,105.40
  6. Step 6: Final answer
    x = 257,850,285.72

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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.