Home / 320,970.84-442,939.58-177,730.76

Finding the Fourth Proportional to 320,970.84, 442,939.58 and 177,730.76

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Solution

The fourth proportional to 320,970.84, 442,939.58 and 177,730.76 is: 245,268.35

Step by Step Solution

  1. Step 1: Write the proportion equation
    320,970.84 : 442,939.58 = 177,730.76 : x
  2. Step 2: Convert to fraction form
    320,970.84/442,939.58 = 177,730.76/x
  3. Step 3: Cross multiply
    320,970.84x = 442,939.58 × 177,730.76
  4. Step 4: Simplify right side
    320,970.84x = 78,723,988,187.48
  5. Step 5: Solve for x
    x = 78,723,988,187.48/320,970.84
  6. Step 6: Final answer
    x = 245,268.35

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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.