Home / 278,643.92-384,646.34-188,122.50

Finding the Fourth Proportional to 278,643.92, 384,646.34 and 188,122.50

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Solution

The fourth proportional to 278,643.92, 384,646.34 and 188,122.50 is: 259,688.53

Step by Step Solution

  1. Step 1: Write the proportion equation
    278,643.92 : 384,646.34 = 188,122.50 : x
  2. Step 2: Convert to fraction form
    278,643.92/384,646.34 = 188,122.50/x
  3. Step 3: Cross multiply
    278,643.92x = 384,646.34 × 188,122.50
  4. Step 4: Simplify right side
    278,643.92x = 72,360,631,096.65
  5. Step 5: Solve for x
    x = 72,360,631,096.65/278,643.92
  6. Step 6: Final answer
    x = 259,688.53

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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.