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Finding the Fourth Proportional to 319,308.53, 440,646.68 and 176,065.43

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Solution

The fourth proportional to 319,308.53, 440,646.68 and 176,065.43 is: 242,970.79

Step by Step Solution

  1. Step 1: Write the proportion equation
    319,308.53 : 440,646.68 = 176,065.43 : x
  2. Step 2: Convert to fraction form
    319,308.53/440,646.68 = 176,065.43/x
  3. Step 3: Cross multiply
    319,308.53x = 440,646.68 × 176,065.43
  4. Step 4: Simplify right side
    319,308.53x = 77,582,645,429.20
  5. Step 5: Solve for x
    x = 77,582,645,429.20/319,308.53
  6. Step 6: Final answer
    x = 242,970.79

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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.