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Finding the Fourth Proportional to 291,612.80, 437,419.20 and 166,865.60

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Solution

The fourth proportional to 291,612.80, 437,419.20 and 166,865.60 is: 250,298.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    291,612.80 : 437,419.20 = 166,865.60 : x
  2. Step 2: Convert to fraction form
    291,612.80/437,419.20 = 166,865.60/x
  3. Step 3: Cross multiply
    291,612.80x = 437,419.20 × 166,865.60
  4. Step 4: Simplify right side
    291,612.80x = 72,990,217,259.52
  5. Step 5: Solve for x
    x = 72,990,217,259.52/291,612.80
  6. Step 6: Final answer
    x = 250,298.40

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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.