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Finding the Fourth Proportional to 291,430.80, 437,059.80 and 113,835.60

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Solution

The fourth proportional to 291,430.80, 437,059.80 and 113,835.60 is: 170,719.65

Step by Step Solution

  1. Step 1: Write the proportion equation
    291,430.80 : 437,059.80 = 113,835.60 : x
  2. Step 2: Convert to fraction form
    291,430.80/437,059.80 = 113,835.60/x
  3. Step 3: Cross multiply
    291,430.80x = 437,059.80 × 113,835.60
  4. Step 4: Simplify right side
    291,430.80x = 49,752,964,568.88
  5. Step 5: Solve for x
    x = 49,752,964,568.88/291,430.80
  6. Step 6: Final answer
    x = 170,719.65

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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.