Home / 319,029.09-440,291.15-238,316.41

Finding the Fourth Proportional to 319,029.09, 440,291.15 and 238,316.41

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Solution

The fourth proportional to 319,029.09, 440,291.15 and 238,316.41 is: 328,899.81

Step by Step Solution

  1. Step 1: Write the proportion equation
    319,029.09 : 440,291.15 = 238,316.41 : x
  2. Step 2: Convert to fraction form
    319,029.09/440,291.15 = 238,316.41/x
  3. Step 3: Cross multiply
    319,029.09x = 440,291.15 × 238,316.41
  4. Step 4: Simplify right side
    319,029.09x = 104,928,606,222.77
  5. Step 5: Solve for x
    x = 104,928,606,222.77/319,029.09
  6. Step 6: Final answer
    x = 328,899.81

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1.5x scale

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.