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Finding the Fourth Proportional to 260,793.60, 390,898.80 and 111,008.40

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Solution

The fourth proportional to 260,793.60, 390,898.80 and 111,008.40 is: 166,388.48

Step by Step Solution

  1. Step 1: Write the proportion equation
    260,793.60 : 390,898.80 = 111,008.40 : x
  2. Step 2: Convert to fraction form
    260,793.60/390,898.80 = 111,008.40/x
  3. Step 3: Cross multiply
    260,793.60x = 390,898.80 × 111,008.40
  4. Step 4: Simplify right side
    260,793.60x = 43,393,050,349.92
  5. Step 5: Solve for x
    x = 43,393,050,349.92/260,793.60
  6. Step 6: Final answer
    x = 166,388.48

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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.