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Finding the Fourth Proportional to 448,323, 618,335.74 and 287,193.03

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Solution

The fourth proportional to 448,323, 618,335.74 and 287,193.03 is: 396,102.17

Step by Step Solution

  1. Step 1: Write the proportion equation
    448,323 : 618,335.74 = 287,193.03 : x
  2. Step 2: Convert to fraction form
    448,323/618,335.74 = 287,193.03/x
  3. Step 3: Cross multiply
    448,323x = 618,335.74 × 287,193.03
  4. Step 4: Simplify right side
    448,323x = 177,581,714,727.89
  5. Step 5: Solve for x
    x = 177,581,714,727.89/448,323
  6. Step 6: Final answer
    x = 396,102.17

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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.