Home / 328,208.19-492,268.50-91,531.05

Finding the Fourth Proportional to 328,208.19, 492,268.50 and 91,531.05

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Solution

The fourth proportional to 328,208.19, 492,268.50 and 91,531.05 is: 137,284.36

Step by Step Solution

  1. Step 1: Write the proportion equation
    328,208.19 : 492,268.50 = 91,531.05 : x
  2. Step 2: Convert to fraction form
    328,208.19/492,268.50 = 91,531.05/x
  3. Step 3: Cross multiply
    328,208.19x = 492,268.50 × 91,531.05
  4. Step 4: Simplify right side
    328,208.19x = 45,057,852,686.93
  5. Step 5: Solve for x
    x = 45,057,852,686.93/328,208.19
  6. Step 6: Final answer
    x = 137,284.36

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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.