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Finding the Fourth Proportional to 291,250.51, 436,878.65 and 80,889.55

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Solution

The fourth proportional to 291,250.51, 436,878.65 and 80,889.55 is: 121,335.13

Step by Step Solution

  1. Step 1: Write the proportion equation
    291,250.51 : 436,878.65 = 80,889.55 : x
  2. Step 2: Convert to fraction form
    291,250.51/436,878.65 = 80,889.55/x
  3. Step 3: Cross multiply
    291,250.51x = 436,878.65 × 80,889.55
  4. Step 4: Simplify right side
    291,250.51x = 35,338,917,403.11
  5. Step 5: Solve for x
    x = 35,338,917,403.11/291,250.51
  6. Step 6: Final answer
    x = 121,335.13

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.