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Finding the Fourth Proportional to 305,548.40, 421,650.44 and 169,574.45

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Solution

The fourth proportional to 305,548.40, 421,650.44 and 169,574.45 is: 234,009.22

Step by Step Solution

  1. Step 1: Write the proportion equation
    305,548.40 : 421,650.44 = 169,574.45 : x
  2. Step 2: Convert to fraction form
    305,548.40/421,650.44 = 169,574.45/x
  3. Step 3: Cross multiply
    305,548.40x = 421,650.44 × 169,574.45
  4. Step 4: Simplify right side
    305,548.40x = 71,501,141,455.26
  5. Step 5: Solve for x
    x = 71,501,141,455.26/305,548.40
  6. Step 6: Final answer
    x = 234,009.22

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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.