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Finding the Fourth Proportional to 319,578.79, 441,018.23 and 176,338.72

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Solution

The fourth proportional to 319,578.79, 441,018.23 and 176,338.72 is: 243,347.16

Step by Step Solution

  1. Step 1: Write the proportion equation
    319,578.79 : 441,018.23 = 176,338.72 : x
  2. Step 2: Convert to fraction form
    319,578.79/441,018.23 = 176,338.72/x
  3. Step 3: Cross multiply
    319,578.79x = 441,018.23 × 176,338.72
  4. Step 4: Simplify right side
    319,578.79x = 77,768,591,084.32
  5. Step 5: Solve for x
    x = 77,768,591,084.32/319,578.79
  6. Step 6: Final answer
    x = 243,347.16

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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.