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Finding the Fourth Proportional to 248,807.56, 343,354.44 and 135,630.40

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Solution

The fourth proportional to 248,807.56, 343,354.44 and 135,630.40 is: 187,169.96

Step by Step Solution

  1. Step 1: Write the proportion equation
    248,807.56 : 343,354.44 = 135,630.40 : x
  2. Step 2: Convert to fraction form
    248,807.56/343,354.44 = 135,630.40/x
  3. Step 3: Cross multiply
    248,807.56x = 343,354.44 × 135,630.40
  4. Step 4: Simplify right side
    248,807.56x = 46,569,300,038.98
  5. Step 5: Solve for x
    x = 46,569,300,038.98/248,807.56
  6. Step 6: Final answer
    x = 187,169.96

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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.