Home / 305,004.18-420,898.59-177,671.55

Finding the Fourth Proportional to 305,004.18, 420,898.59 and 177,671.55

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Solution

The fourth proportional to 305,004.18, 420,898.59 and 177,671.55 is: 245,182.56

Step by Step Solution

  1. Step 1: Write the proportion equation
    305,004.18 : 420,898.59 = 177,671.55 : x
  2. Step 2: Convert to fraction form
    305,004.18/420,898.59 = 177,671.55/x
  3. Step 3: Cross multiply
    305,004.18x = 420,898.59 × 177,671.55
  4. Step 4: Simplify right side
    305,004.18x = 74,781,704,878.11
  5. Step 5: Solve for x
    x = 74,781,704,878.11/305,004.18
  6. Step 6: Final answer
    x = 245,182.56

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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.