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Finding the Fourth Proportional to 260,035.60, 390,053.40 and 220,766.80

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Solution

The fourth proportional to 260,035.60, 390,053.40 and 220,766.80 is: 331,150.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    260,035.60 : 390,053.40 = 220,766.80 : x
  2. Step 2: Convert to fraction form
    260,035.60/390,053.40 = 220,766.80/x
  3. Step 3: Cross multiply
    260,035.60x = 390,053.40 × 220,766.80
  4. Step 4: Simplify right side
    260,035.60x = 86,110,840,947.12
  5. Step 5: Solve for x
    x = 86,110,840,947.12/260,035.60
  6. Step 6: Final answer
    x = 331,150.20

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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.