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Finding the Fourth Proportional to 201,509.60, 301,918.80 and 131,352.80

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Solution

The fourth proportional to 201,509.60, 301,918.80 and 131,352.80 is: 196,803.92

Step by Step Solution

  1. Step 1: Write the proportion equation
    201,509.60 : 301,918.80 = 131,352.80 : x
  2. Step 2: Convert to fraction form
    201,509.60/301,918.80 = 131,352.80/x
  3. Step 3: Cross multiply
    201,509.60x = 301,918.80 × 131,352.80
  4. Step 4: Simplify right side
    201,509.60x = 39,657,879,752.64
  5. Step 5: Solve for x
    x = 39,657,879,752.64/201,509.60
  6. Step 6: Final answer
    x = 196,803.92

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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.