Home / 319,021.08-440,280.11-238,308.47

Finding the Fourth Proportional to 319,021.08, 440,280.11 and 238,308.47

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Solution

The fourth proportional to 319,021.08, 440,280.11 and 238,308.47 is: 328,888.85

Step by Step Solution

  1. Step 1: Write the proportion equation
    319,021.08 : 440,280.11 = 238,308.47 : x
  2. Step 2: Convert to fraction form
    319,021.08/440,280.11 = 238,308.47/x
  3. Step 3: Cross multiply
    319,021.08x = 440,280.11 × 238,308.47
  4. Step 4: Simplify right side
    319,021.08x = 104,922,475,992.59
  5. Step 5: Solve for x
    x = 104,922,475,992.59/319,021.08
  6. Step 6: Final answer
    x = 328,888.85

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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.