Home / 319,198,406.70-440,493,602.22-172,520,690.70

Finding the Fourth Proportional to 319,198,406.70, 440,493,602.22 and 172,520,690.70

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Solution

The fourth proportional to 319,198,406.70, 440,493,602.22 and 172,520,690.70 is: 238,078,445.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    319,198,406.70 : 440,493,602.22 = 172,520,690.70 : x
  2. Step 2: Convert to fraction form
    319,198,406.70/440,493,602.22 = 172,520,690.70/x
  3. Step 3: Cross multiply
    319,198,406.70x = 440,493,602.22 × 172,520,690.70
  4. Step 4: Simplify right side
    319,198,406.70x = 75,994,260,503,925,456
  5. Step 5: Solve for x
    x = 75,994,260,503,925,456/319,198,406.70
  6. Step 6: Final answer
    x = 238,078,445.60

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.