Home / 278,505.42-384,346.64-157,644.11

Finding the Fourth Proportional to 278,505.42, 384,346.64 and 157,644.11

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Solution

The fourth proportional to 278,505.42, 384,346.64 and 157,644.11 is: 217,554.05

Step by Step Solution

  1. Step 1: Write the proportion equation
    278,505.42 : 384,346.64 = 157,644.11 : x
  2. Step 2: Convert to fraction form
    278,505.42/384,346.64 = 157,644.11/x
  3. Step 3: Cross multiply
    278,505.42x = 384,346.64 × 157,644.11
  4. Step 4: Simplify right side
    278,505.42x = 60,589,983,206.07
  5. Step 5: Solve for x
    x = 60,589,983,206.07/278,505.42
  6. Step 6: Final answer
    x = 217,554.05

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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.