Home / 448,478,129.40-672,238,897.20-172,022,521.20

Finding the Fourth Proportional to 448,478,129.40, 672,238,897.20 and 172,022,521.20

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Solution

The fourth proportional to 448,478,129.40, 672,238,897.20 and 172,022,521.20 is: 257,850,321.71

Step by Step Solution

  1. Step 1: Write the proportion equation
    448,478,129.40 : 672,238,897.20 = 172,022,521.20 : x
  2. Step 2: Convert to fraction form
    448,478,129.40/672,238,897.20 = 172,022,521.20/x
  3. Step 3: Cross multiply
    448,478,129.40x = 672,238,897.20 × 172,022,521.20
  4. Step 4: Simplify right side
    448,478,129.40x = 115,640,229,945,051,616
  5. Step 5: Solve for x
    x = 115,640,229,945,051,616/448,478,129.40
  6. Step 6: Final answer
    x = 257,850,321.71

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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.