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Finding the Fourth Proportional to 272,574.60, 408,945.64 and 139,548.26

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Solution

The fourth proportional to 272,574.60, 408,945.64 and 139,548.26 is: 209,365.26

Step by Step Solution

  1. Step 1: Write the proportion equation
    272,574.60 : 408,945.64 = 139,548.26 : x
  2. Step 2: Convert to fraction form
    272,574.60/408,945.64 = 139,548.26/x
  3. Step 3: Cross multiply
    272,574.60x = 408,945.64 × 139,548.26
  4. Step 4: Simplify right side
    272,574.60x = 57,067,652,496.59
  5. Step 5: Solve for x
    x = 57,067,652,496.59/272,574.60
  6. Step 6: Final answer
    x = 209,365.26

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.