Home / 312,018,755.44-430,599,417.64-172,789,517.22

Finding the Fourth Proportional to 312,018,755.44, 430,599,417.64 and 172,789,517.22

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Solution

The fourth proportional to 312,018,755.44, 430,599,417.64 and 172,789,517.22 is: 238,457,029.24

Step by Step Solution

  1. Step 1: Write the proportion equation
    312,018,755.44 : 430,599,417.64 = 172,789,517.22 : x
  2. Step 2: Convert to fraction form
    312,018,755.44/430,599,417.64 = 172,789,517.22/x
  3. Step 3: Cross multiply
    312,018,755.44x = 430,599,417.64 × 172,789,517.22
  4. Step 4: Simplify right side
    312,018,755.44x = 74,403,065,489,228,752
  5. Step 5: Solve for x
    x = 74,403,065,489,228,752/312,018,755.44
  6. Step 6: Final answer
    x = 238,457,029.24

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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.