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Finding the Fourth Proportional to 305,999.87, 422,271.42 and 170,030.33

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Solution

The fourth proportional to 305,999.87, 422,271.42 and 170,030.33 is: 234,637.18

Step by Step Solution

  1. Step 1: Write the proportion equation
    305,999.87 : 422,271.42 = 170,030.33 : x
  2. Step 2: Convert to fraction form
    305,999.87/422,271.42 = 170,030.33/x
  3. Step 3: Cross multiply
    305,999.87x = 422,271.42 × 170,030.33
  4. Step 4: Simplify right side
    305,999.87x = 71,798,946,780.81
  5. Step 5: Solve for x
    x = 71,798,946,780.81/305,999.87
  6. Step 6: Final answer
    x = 234,637.18

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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.