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Finding the Fourth Proportional to 260,030.40, 389,462.40 and 213,374.40

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Solution

The fourth proportional to 260,030.40, 389,462.40 and 213,374.40 is: 319,583.04

Step by Step Solution

  1. Step 1: Write the proportion equation
    260,030.40 : 389,462.40 = 213,374.40 : x
  2. Step 2: Convert to fraction form
    260,030.40/389,462.40 = 213,374.40/x
  3. Step 3: Cross multiply
    260,030.40x = 389,462.40 × 213,374.40
  4. Step 4: Simplify right side
    260,030.40x = 83,101,305,922.56
  5. Step 5: Solve for x
    x = 83,101,305,922.56/260,030.40
  6. Step 6: Final answer
    x = 319,583.04

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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.