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Finding the Fourth Proportional to 325,472.36, 448,921.50 and 280,072.07

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Solution

The fourth proportional to 325,472.36, 448,921.50 and 280,072.07 is: 386,301.22

Step by Step Solution

  1. Step 1: Write the proportion equation
    325,472.36 : 448,921.50 = 280,072.07 : x
  2. Step 2: Convert to fraction form
    325,472.36/448,921.50 = 280,072.07/x
  3. Step 3: Cross multiply
    325,472.36x = 448,921.50 × 280,072.07
  4. Step 4: Simplify right side
    325,472.36x = 125,730,370,477.63
  5. Step 5: Solve for x
    x = 125,730,370,477.63/325,472.36
  6. Step 6: Final answer
    x = 386,301.22

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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.