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Finding the Fourth Proportional to 248,397.28, 342,786.54 and 135,219.76

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Solution

The fourth proportional to 248,397.28, 342,786.54 and 135,219.76 is: 186,602.34

Step by Step Solution

  1. Step 1: Write the proportion equation
    248,397.28 : 342,786.54 = 135,219.76 : x
  2. Step 2: Convert to fraction form
    248,397.28/342,786.54 = 135,219.76/x
  3. Step 3: Cross multiply
    248,397.28x = 342,786.54 × 135,219.76
  4. Step 4: Simplify right side
    248,397.28x = 46,351,513,670.03
  5. Step 5: Solve for x
    x = 46,351,513,670.03/248,397.28
  6. Step 6: Final answer
    x = 186,602.34

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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.