Home / 319,198,391.17-440,493,580.85-172,520,675.17

Finding the Fourth Proportional to 319,198,391.17, 440,493,580.85 and 172,520,675.17

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Solution

The fourth proportional to 319,198,391.17, 440,493,580.85 and 172,520,675.17 is: 238,078,424.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    319,198,391.17 : 440,493,580.85 = 172,520,675.17 : x
  2. Step 2: Convert to fraction form
    319,198,391.17/440,493,580.85 = 172,520,675.17/x
  3. Step 3: Cross multiply
    319,198,391.17x = 440,493,580.85 × 172,520,675.17
  4. Step 4: Simplify right side
    319,198,391.17x = 75,994,249,976,292,976
  5. Step 5: Solve for x
    x = 75,994,249,976,292,976/319,198,391.17
  6. Step 6: Final answer
    x = 238,078,424.20

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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.