Home / 290,368,573.52-400,622,669.10-172,799,652.56

Finding the Fourth Proportional to 290,368,573.52, 400,622,669.10 and 172,799,652.56

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Solution

The fourth proportional to 290,368,573.52, 400,622,669.10 and 172,799,652.56 is: 238,412,363.94

Step by Step Solution

  1. Step 1: Write the proportion equation
    290,368,573.52 : 400,622,669.10 = 172,799,652.56 : x
  2. Step 2: Convert to fraction form
    290,368,573.52/400,622,669.10 = 172,799,652.56/x
  3. Step 3: Cross multiply
    290,368,573.52x = 400,622,669.10 × 172,799,652.56
  4. Step 4: Simplify right side
    290,368,573.52x = 69,227,458,028,139,856
  5. Step 5: Solve for x
    x = 69,227,458,028,139,856/290,368,573.52
  6. Step 6: Final answer
    x = 238,412,363.94

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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.