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Finding the Fourth Proportional to 615,135.90, 922,427.01 and 259,967.10

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Solution

The fourth proportional to 615,135.90, 922,427.01 and 259,967.10 is: 389,833.65

Step by Step Solution

  1. Step 1: Write the proportion equation
    615,135.90 : 922,427.01 = 259,967.10 : x
  2. Step 2: Convert to fraction form
    615,135.90/922,427.01 = 259,967.10/x
  3. Step 3: Cross multiply
    615,135.90x = 922,427.01 × 259,967.10
  4. Step 4: Simplify right side
    615,135.90x = 239,800,674,751.37
  5. Step 5: Solve for x
    x = 239,800,674,751.37/615,135.90
  6. Step 6: Final answer
    x = 389,833.65

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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.