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Finding the Fourth Proportional to 260,605.55, 390,271.37 and 235,362.11

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Solution

The fourth proportional to 260,605.55, 390,271.37 and 235,362.11 is: 352,467.89

Step by Step Solution

  1. Step 1: Write the proportion equation
    260,605.55 : 390,271.37 = 235,362.11 : x
  2. Step 2: Convert to fraction form
    260,605.55/390,271.37 = 235,362.11/x
  3. Step 3: Cross multiply
    260,605.55x = 390,271.37 × 235,362.11
  4. Step 4: Simplify right side
    260,605.55x = 91,855,089,987.62
  5. Step 5: Solve for x
    x = 91,855,089,987.62/260,605.55
  6. Step 6: Final answer
    x = 352,467.89

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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.