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Finding the Fourth Proportional to 448,011.78, 618,275.61 and 254,415.57

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Solution

The fourth proportional to 448,011.78, 618,275.61 and 254,415.57 is: 351,104.48

Step by Step Solution

  1. Step 1: Write the proportion equation
    448,011.78 : 618,275.61 = 254,415.57 : x
  2. Step 2: Convert to fraction form
    448,011.78/618,275.61 = 254,415.57/x
  3. Step 3: Cross multiply
    448,011.78x = 618,275.61 × 254,415.57
  4. Step 4: Simplify right side
    448,011.78x = 157,298,941,735.25
  5. Step 5: Solve for x
    x = 157,298,941,735.25/448,011.78
  6. Step 6: Final answer
    x = 351,104.48

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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.