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Finding the Fourth Proportional to 615,066.90, 922,272.30 and 259,679.40

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Solution

The fourth proportional to 615,066.90, 922,272.30 and 259,679.40 is: 389,380.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    615,066.90 : 922,272.30 = 259,679.40 : x
  2. Step 2: Convert to fraction form
    615,066.90/922,272.30 = 259,679.40/x
  3. Step 3: Cross multiply
    615,066.90x = 922,272.30 × 259,679.40
  4. Step 4: Simplify right side
    615,066.90x = 239,495,117,500.62
  5. Step 5: Solve for x
    x = 239,495,117,500.62/615,066.90
  6. Step 6: Final answer
    x = 389,380.60

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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.