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Finding the Fourth Proportional to 319,308.44, 440,636.20 and 176,068.44

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Solution

The fourth proportional to 319,308.44, 440,636.20 and 176,068.44 is: 242,969.24

Step by Step Solution

  1. Step 1: Write the proportion equation
    319,308.44 : 440,636.20 = 176,068.44 : x
  2. Step 2: Convert to fraction form
    319,308.44/440,636.20 = 176,068.44/x
  3. Step 3: Cross multiply
    319,308.44x = 440,636.20 × 176,068.44
  4. Step 4: Simplify right side
    319,308.44x = 77,582,128,341.53
  5. Step 5: Solve for x
    x = 77,582,128,341.53/319,308.44
  6. Step 6: Final answer
    x = 242,969.24

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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.