Home / 345,820.28-518,852.44-121,243.28

Finding the Fourth Proportional to 345,820.28, 518,852.44 and 121,243.28

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Solution

The fourth proportional to 345,820.28, 518,852.44 and 121,243.28 is: 181,907.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    345,820.28 : 518,852.44 = 121,243.28 : x
  2. Step 2: Convert to fraction form
    345,820.28/518,852.44 = 121,243.28/x
  3. Step 3: Cross multiply
    345,820.28x = 518,852.44 × 121,243.28
  4. Step 4: Simplify right side
    345,820.28x = 62,907,371,661.60
  5. Step 5: Solve for x
    x = 62,907,371,661.60/345,820.28
  6. Step 6: Final answer
    x = 181,907.70

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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.