Home / 212,927.28-319,230.54-128,669.52

Finding the Fourth Proportional to 212,927.28, 319,230.54 and 128,669.52

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Solution

The fourth proportional to 212,927.28, 319,230.54 and 128,669.52 is: 192,907.36

Step by Step Solution

  1. Step 1: Write the proportion equation
    212,927.28 : 319,230.54 = 128,669.52 : x
  2. Step 2: Convert to fraction form
    212,927.28/319,230.54 = 128,669.52/x
  3. Step 3: Cross multiply
    212,927.28x = 319,230.54 × 128,669.52
  4. Step 4: Simplify right side
    212,927.28x = 41,075,240,351.14
  5. Step 5: Solve for x
    x = 41,075,240,351.14/212,927.28
  6. Step 6: Final answer
    x = 192,907.36

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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.