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Finding the Fourth Proportional to 260,365.56, 390,407.85 and 118,133.22

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Solution

The fourth proportional to 260,365.56, 390,407.85 and 118,133.22 is: 177,136.09

Step by Step Solution

  1. Step 1: Write the proportion equation
    260,365.56 : 390,407.85 = 118,133.22 : x
  2. Step 2: Convert to fraction form
    260,365.56/390,407.85 = 118,133.22/x
  3. Step 3: Cross multiply
    260,365.56x = 390,407.85 × 118,133.22
  4. Step 4: Simplify right side
    260,365.56x = 46,120,136,433.78
  5. Step 5: Solve for x
    x = 46,120,136,433.78/260,365.56
  6. Step 6: Final answer
    x = 177,136.09

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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.