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Finding the Fourth Proportional to 225,339.75, 310,968.86 and 123,364.89

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Solution

The fourth proportional to 225,339.75, 310,968.86 and 123,364.89 is: 170,243.55

Step by Step Solution

  1. Step 1: Write the proportion equation
    225,339.75 : 310,968.86 = 123,364.89 : x
  2. Step 2: Convert to fraction form
    225,339.75/310,968.86 = 123,364.89/x
  3. Step 3: Cross multiply
    225,339.75x = 310,968.86 × 123,364.89
  4. Step 4: Simplify right side
    225,339.75x = 38,362,638,590.50
  5. Step 5: Solve for x
    x = 38,362,638,590.50/225,339.75
  6. Step 6: Final answer
    x = 170,243.55

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1.5x scale

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.