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Finding the Fourth Proportional to 615,041.64, 922,906.92 and 260,321.16

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Solution

The fourth proportional to 615,041.64, 922,906.92 and 260,321.16 is: 390,627.54

Step by Step Solution

  1. Step 1: Write the proportion equation
    615,041.64 : 922,906.92 = 260,321.16 : x
  2. Step 2: Convert to fraction form
    615,041.64/922,906.92 = 260,321.16/x
  3. Step 3: Cross multiply
    615,041.64x = 922,906.92 × 260,321.16
  4. Step 4: Simplify right side
    615,041.64x = 240,252,199,986.43
  5. Step 5: Solve for x
    x = 240,252,199,986.43/615,041.64
  6. Step 6: Final answer
    x = 390,627.54

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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.