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Finding the Fourth Proportional to 248,730.50, 343,250.52 and 135,555.68

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Solution

The fourth proportional to 248,730.50, 343,250.52 and 135,555.68 is: 187,068.16

Step by Step Solution

  1. Step 1: Write the proportion equation
    248,730.50 : 343,250.52 = 135,555.68 : x
  2. Step 2: Convert to fraction form
    248,730.50/343,250.52 = 135,555.68/x
  3. Step 3: Cross multiply
    248,730.50x = 343,250.52 × 135,555.68
  4. Step 4: Simplify right side
    248,730.50x = 46,529,557,648.95
  5. Step 5: Solve for x
    x = 46,529,557,648.95/248,730.50
  6. Step 6: Final answer
    x = 187,068.16

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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.