Home / 248,420.40-342,825.60-135,243.12

Finding the Fourth Proportional to 248,420.40, 342,825.60 and 135,243.12

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Solution

The fourth proportional to 248,420.40, 342,825.60 and 135,243.12 is: 186,638.47

Step by Step Solution

  1. Step 1: Write the proportion equation
    248,420.40 : 342,825.60 = 135,243.12 : x
  2. Step 2: Convert to fraction form
    248,420.40/342,825.60 = 135,243.12/x
  3. Step 3: Cross multiply
    248,420.40x = 342,825.60 × 135,243.12
  4. Step 4: Simplify right side
    248,420.40x = 46,364,803,759.87
  5. Step 5: Solve for x
    x = 46,364,803,759.87/248,420.40
  6. Step 6: Final answer
    x = 186,638.47

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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.