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Finding the Fourth Proportional to 201,266.60, 301,899.90 and 130,407.80

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Solution

The fourth proportional to 201,266.60, 301,899.90 and 130,407.80 is: 195,611.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    201,266.60 : 301,899.90 = 130,407.80 : x
  2. Step 2: Convert to fraction form
    201,266.60/301,899.90 = 130,407.80/x
  3. Step 3: Cross multiply
    201,266.60x = 301,899.90 × 130,407.80
  4. Step 4: Simplify right side
    201,266.60x = 39,370,101,779.22
  5. Step 5: Solve for x
    x = 39,370,101,779.22/201,266.60
  6. Step 6: Final answer
    x = 195,611.70

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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.