Home / 319,441,138.56-440,828,767.80-172,763,422.56

Finding the Fourth Proportional to 319,441,138.56, 440,828,767.80 and 172,763,422.56

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Solution

The fourth proportional to 319,441,138.56, 440,828,767.80 and 172,763,422.56 is: 238,413,521.29

Step by Step Solution

  1. Step 1: Write the proportion equation
    319,441,138.56 : 440,828,767.80 = 172,763,422.56 : x
  2. Step 2: Convert to fraction form
    319,441,138.56/440,828,767.80 = 172,763,422.56/x
  3. Step 3: Cross multiply
    319,441,138.56x = 440,828,767.80 × 172,763,422.56
  4. Step 4: Simplify right side
    319,441,138.56x = 76,159,086,688,035,520
  5. Step 5: Solve for x
    x = 76,159,086,688,035,520/319,441,138.56
  6. Step 6: Final answer
    x = 238,413,521.29

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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.