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Finding the Fourth Proportional to 260,830, 390,606.92 and 235,586.24

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Solution

The fourth proportional to 260,830, 390,606.92 and 235,586.24 is: 352,803.03

Step by Step Solution

  1. Step 1: Write the proportion equation
    260,830 : 390,606.92 = 235,586.24 : x
  2. Step 2: Convert to fraction form
    260,830/390,606.92 = 235,586.24/x
  3. Step 3: Cross multiply
    260,830x = 390,606.92 × 235,586.24
  4. Step 4: Simplify right side
    260,830x = 92,021,615,600.78
  5. Step 5: Solve for x
    x = 92,021,615,600.78/260,830
  6. Step 6: Final answer
    x = 352,803.03

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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.