Home / 278,679.02-417,911.55-118,653.49

Finding the Fourth Proportional to 278,679.02, 417,911.55 and 118,653.49

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Solution

The fourth proportional to 278,679.02, 417,911.55 and 118,653.49 is: 177,934.69

Step by Step Solution

  1. Step 1: Write the proportion equation
    278,679.02 : 417,911.55 = 118,653.49 : x
  2. Step 2: Convert to fraction form
    278,679.02/417,911.55 = 118,653.49/x
  3. Step 3: Cross multiply
    278,679.02x = 417,911.55 × 118,653.49
  4. Step 4: Simplify right side
    278,679.02x = 49,586,664,663.67
  5. Step 5: Solve for x
    x = 49,586,664,663.67/278,679.02
  6. Step 6: Final answer
    x = 177,934.69

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.