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Finding the Fourth Proportional to 325,055.76, 448,689.96 and 223,418.40

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Solution

The fourth proportional to 325,055.76, 448,689.96 and 223,418.40 is: 308,395.07

Step by Step Solution

  1. Step 1: Write the proportion equation
    325,055.76 : 448,689.96 = 223,418.40 : x
  2. Step 2: Convert to fraction form
    325,055.76/448,689.96 = 223,418.40/x
  3. Step 3: Cross multiply
    325,055.76x = 448,689.96 × 223,418.40
  4. Step 4: Simplify right side
    325,055.76x = 100,245,592,959.26
  5. Step 5: Solve for x
    x = 100,245,592,959.26/325,055.76
  6. Step 6: Final answer
    x = 308,395.07

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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.