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Finding the Fourth Proportional to 248,386, 342,772.72 and 135,209.60

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Solution

The fourth proportional to 248,386, 342,772.72 and 135,209.60 is: 186,589.27

Step by Step Solution

  1. Step 1: Write the proportion equation
    248,386 : 342,772.72 = 135,209.60 : x
  2. Step 2: Convert to fraction form
    248,386/342,772.72 = 135,209.60/x
  3. Step 3: Cross multiply
    248,386x = 342,772.72 × 135,209.60
  4. Step 4: Simplify right side
    248,386x = 46,346,162,362.11
  5. Step 5: Solve for x
    x = 46,346,162,362.11/248,386
  6. Step 6: Final answer
    x = 186,589.27

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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.