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Finding the Fourth Proportional to 248,461.56, 342,877.74 and 135,285

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Solution

The fourth proportional to 248,461.56, 342,877.74 and 135,285 is: 186,693.73

Step by Step Solution

  1. Step 1: Write the proportion equation
    248,461.56 : 342,877.74 = 135,285 : x
  2. Step 2: Convert to fraction form
    248,461.56/342,877.74 = 135,285/x
  3. Step 3: Cross multiply
    248,461.56x = 342,877.74 × 135,285
  4. Step 4: Simplify right side
    248,461.56x = 46,386,215,055.90
  5. Step 5: Solve for x
    x = 46,386,215,055.90/248,461.56
  6. Step 6: Final answer
    x = 186,693.73

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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.