Home / 287,685.64-396,820.92-190,887.40

Finding the Fourth Proportional to 287,685.64, 396,820.92 and 190,887.40

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Solution

The fourth proportional to 287,685.64, 396,820.92 and 190,887.40 is: 263,301.68

Step by Step Solution

  1. Step 1: Write the proportion equation
    287,685.64 : 396,820.92 = 190,887.40 : x
  2. Step 2: Convert to fraction form
    287,685.64/396,820.92 = 190,887.40/x
  3. Step 3: Cross multiply
    287,685.64x = 396,820.92 × 190,887.40
  4. Step 4: Simplify right side
    287,685.64x = 75,748,113,684.41
  5. Step 5: Solve for x
    x = 75,748,113,684.41/287,685.64
  6. Step 6: Final answer
    x = 263,301.68

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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.