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Finding the Fourth Proportional to 291,235.52, 436,483.92 and 131,140.64

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Solution

The fourth proportional to 291,235.52, 436,483.92 and 131,140.64 is: 196,544.64

Step by Step Solution

  1. Step 1: Write the proportion equation
    291,235.52 : 436,483.92 = 131,140.64 : x
  2. Step 2: Convert to fraction form
    291,235.52/436,483.92 = 131,140.64/x
  3. Step 3: Cross multiply
    291,235.52x = 436,483.92 × 131,140.64
  4. Step 4: Simplify right side
    291,235.52x = 57,240,780,618.51
  5. Step 5: Solve for x
    x = 57,240,780,618.51/291,235.52
  6. Step 6: Final answer
    x = 196,544.64

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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.