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Finding the Fourth Proportional to 291,216.52, 436,824.60 and 80,854.40

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Solution

The fourth proportional to 291,216.52, 436,824.60 and 80,854.40 is: 121,281.55

Step by Step Solution

  1. Step 1: Write the proportion equation
    291,216.52 : 436,824.60 = 80,854.40 : x
  2. Step 2: Convert to fraction form
    291,216.52/436,824.60 = 80,854.40/x
  3. Step 3: Cross multiply
    291,216.52x = 436,824.60 × 80,854.40
  4. Step 4: Simplify right side
    291,216.52x = 35,319,190,938.24
  5. Step 5: Solve for x
    x = 35,319,190,938.24/291,216.52
  6. Step 6: Final answer
    x = 121,281.55

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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.