Home / 290,368,599.52-400,622,704.98-172,799,678.56

Finding the Fourth Proportional to 290,368,599.52, 400,622,704.98 and 172,799,678.56

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Solution

The fourth proportional to 290,368,599.52, 400,622,704.98 and 172,799,678.56 is: 238,412,399.82

Step by Step Solution

  1. Step 1: Write the proportion equation
    290,368,599.52 : 400,622,704.98 = 172,799,678.56 : x
  2. Step 2: Convert to fraction form
    290,368,599.52/400,622,704.98 = 172,799,678.56/x
  3. Step 3: Cross multiply
    290,368,599.52x = 400,622,704.98 × 172,799,678.56
  4. Step 4: Simplify right side
    290,368,599.52x = 69,227,474,644,381,712
  5. Step 5: Solve for x
    x = 69,227,474,644,381,712/290,368,599.52
  6. Step 6: Final answer
    x = 238,412,399.82

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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.