Home / 278,302.38-384,051.87-157,438.86

Finding the Fourth Proportional to 278,302.38, 384,051.87 and 157,438.86

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Solution

The fourth proportional to 278,302.38, 384,051.87 and 157,438.86 is: 217,262.56

Step by Step Solution

  1. Step 1: Write the proportion equation
    278,302.38 : 384,051.87 = 157,438.86 : x
  2. Step 2: Convert to fraction form
    278,302.38/384,051.87 = 157,438.86/x
  3. Step 3: Cross multiply
    278,302.38x = 384,051.87 × 157,438.86
  4. Step 4: Simplify right side
    278,302.38x = 60,464,688,593.67
  5. Step 5: Solve for x
    x = 60,464,688,593.67/278,302.38
  6. Step 6: Final answer
    x = 217,262.56

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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.