Home / 278,640.68-384,516.32-157,793.40

Finding the Fourth Proportional to 278,640.68, 384,516.32 and 157,793.40

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Solution

The fourth proportional to 278,640.68, 384,516.32 and 157,793.40 is: 217,750.47

Step by Step Solution

  1. Step 1: Write the proportion equation
    278,640.68 : 384,516.32 = 157,793.40 : x
  2. Step 2: Convert to fraction form
    278,640.68/384,516.32 = 157,793.40/x
  3. Step 3: Cross multiply
    278,640.68x = 384,516.32 × 157,793.40
  4. Step 4: Simplify right side
    278,640.68x = 60,674,136,699.32
  5. Step 5: Solve for x
    x = 60,674,136,699.32/278,640.68
  6. Step 6: Final answer
    x = 217,750.47

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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.