Home / 212,930.49-319,395.74-55,158.94

Finding the Fourth Proportional to 212,930.49, 319,395.74 and 55,158.94

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Solution

The fourth proportional to 212,930.49, 319,395.74 and 55,158.94 is: 82,738.41

Step by Step Solution

  1. Step 1: Write the proportion equation
    212,930.49 : 319,395.74 = 55,158.94 : x
  2. Step 2: Convert to fraction form
    212,930.49/319,395.74 = 55,158.94/x
  3. Step 3: Cross multiply
    212,930.49x = 319,395.74 × 55,158.94
  4. Step 4: Simplify right side
    212,930.49x = 17,617,529,384.63
  5. Step 5: Solve for x
    x = 17,617,529,384.63/212,930.49
  6. Step 6: Final answer
    x = 82,738.41

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.