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Finding the Fourth Proportional to 320,382, 442,109.88 and 177,133.68

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Solution

The fourth proportional to 320,382, 442,109.88 and 177,133.68 is: 244,434.92

Step by Step Solution

  1. Step 1: Write the proportion equation
    320,382 : 442,109.88 = 177,133.68 : x
  2. Step 2: Convert to fraction form
    320,382/442,109.88 = 177,133.68/x
  3. Step 3: Cross multiply
    320,382x = 442,109.88 × 177,133.68
  4. Step 4: Simplify right side
    320,382x = 78,312,550,008.76
  5. Step 5: Solve for x
    x = 78,312,550,008.76/320,382
  6. Step 6: Final answer
    x = 244,434.92

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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.