Home / 278,643.11-384,527.46-157,784.36

Finding the Fourth Proportional to 278,643.11, 384,527.46 and 157,784.36

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Solution

The fourth proportional to 278,643.11, 384,527.46 and 157,784.36 is: 217,742.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    278,643.11 : 384,527.46 = 157,784.36 : x
  2. Step 2: Convert to fraction form
    278,643.11/384,527.46 = 157,784.36/x
  3. Step 3: Cross multiply
    278,643.11x = 384,527.46 × 157,784.36
  4. Step 4: Simplify right side
    278,643.11x = 60,672,419,548.15
  5. Step 5: Solve for x
    x = 60,672,419,548.15/278,643.11
  6. Step 6: Final answer
    x = 217,742.40

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.