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Finding the Fourth Proportional to 248,365.48, 342,764.58 and 139,467.40

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Solution

The fourth proportional to 248,365.48, 342,764.58 and 139,467.40 is: 192,476.37

Step by Step Solution

  1. Step 1: Write the proportion equation
    248,365.48 : 342,764.58 = 139,467.40 : x
  2. Step 2: Convert to fraction form
    248,365.48/342,764.58 = 139,467.40/x
  3. Step 3: Cross multiply
    248,365.48x = 342,764.58 × 139,467.40
  4. Step 4: Simplify right side
    248,365.48x = 47,804,484,784.69
  5. Step 5: Solve for x
    x = 47,804,484,784.69/248,365.48
  6. Step 6: Final answer
    x = 192,476.37

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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.