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Finding the Fourth Proportional to 248,145.72, 342,442.28 and 134,969.28

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Solution

The fourth proportional to 248,145.72, 342,442.28 and 134,969.28 is: 186,258.25

Step by Step Solution

  1. Step 1: Write the proportion equation
    248,145.72 : 342,442.28 = 134,969.28 : x
  2. Step 2: Convert to fraction form
    248,145.72/342,442.28 = 134,969.28/x
  3. Step 3: Cross multiply
    248,145.72x = 342,442.28 × 134,969.28
  4. Step 4: Simplify right side
    248,145.72x = 46,219,187,973.16
  5. Step 5: Solve for x
    x = 46,219,187,973.16/248,145.72
  6. Step 6: Final answer
    x = 186,258.25

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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.