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Finding the Fourth Proportional to 260,014.60, 390,021.90 and 242,518.60

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Solution

The fourth proportional to 260,014.60, 390,021.90 and 242,518.60 is: 363,777.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    260,014.60 : 390,021.90 = 242,518.60 : x
  2. Step 2: Convert to fraction form
    260,014.60/390,021.90 = 242,518.60/x
  3. Step 3: Cross multiply
    260,014.60x = 390,021.90 × 242,518.60
  4. Step 4: Simplify right side
    260,014.60x = 94,587,565,157.34
  5. Step 5: Solve for x
    x = 94,587,565,157.34/260,014.60
  6. Step 6: Final answer
    x = 363,777.90

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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.