Home / 291,725.20-437,533.80-81,319.60

Finding the Fourth Proportional to 291,725.20, 437,533.80 and 81,319.60

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Solution

The fourth proportional to 291,725.20, 437,533.80 and 81,319.60 is: 121,964.35

Step by Step Solution

  1. Step 1: Write the proportion equation
    291,725.20 : 437,533.80 = 81,319.60 : x
  2. Step 2: Convert to fraction form
    291,725.20/437,533.80 = 81,319.60/x
  3. Step 3: Cross multiply
    291,725.20x = 437,533.80 × 81,319.60
  4. Step 4: Simplify right side
    291,725.20x = 35,580,073,602.48
  5. Step 5: Solve for x
    x = 35,580,073,602.48/291,725.20
  6. Step 6: Final answer
    x = 121,964.35

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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.