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Finding the Fourth Proportional to 248,387.95, 342,783.65 and 139,511.44

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Solution

The fourth proportional to 248,387.95, 342,783.65 and 139,511.44 is: 192,530.44

Step by Step Solution

  1. Step 1: Write the proportion equation
    248,387.95 : 342,783.65 = 139,511.44 : x
  2. Step 2: Convert to fraction form
    248,387.95/342,783.65 = 139,511.44/x
  3. Step 3: Cross multiply
    248,387.95x = 342,783.65 × 139,511.44
  4. Step 4: Simplify right side
    248,387.95x = 47,822,240,619.96
  5. Step 5: Solve for x
    x = 47,822,240,619.96/248,387.95
  6. Step 6: Final answer
    x = 192,530.44

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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.