Home / 388,075.07-582,209.51-135,359.19

Finding the Fourth Proportional to 388,075.07, 582,209.51 and 135,359.19

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Solution

The fourth proportional to 388,075.07, 582,209.51 and 135,359.19 is: 203,072.58

Step by Step Solution

  1. Step 1: Write the proportion equation
    388,075.07 : 582,209.51 = 135,359.19 : x
  2. Step 2: Convert to fraction form
    388,075.07/582,209.51 = 135,359.19/x
  3. Step 3: Cross multiply
    388,075.07x = 582,209.51 × 135,359.19
  4. Step 4: Simplify right side
    388,075.07x = 78,807,407,007.10
  5. Step 5: Solve for x
    x = 78,807,407,007.10/388,075.07
  6. Step 6: Final answer
    x = 203,072.58

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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.