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Finding the Fourth Proportional to 319,290.39, 440,623.80 and 176,055.66

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Solution

The fourth proportional to 319,290.39, 440,623.80 and 176,055.66 is: 242,958.50

Step by Step Solution

  1. Step 1: Write the proportion equation
    319,290.39 : 440,623.80 = 176,055.66 : x
  2. Step 2: Convert to fraction form
    319,290.39/440,623.80 = 176,055.66/x
  3. Step 3: Cross multiply
    319,290.39x = 440,623.80 × 176,055.66
  4. Step 4: Simplify right side
    319,290.39x = 77,574,313,920.71
  5. Step 5: Solve for x
    x = 77,574,313,920.71/319,290.39
  6. Step 6: Final answer
    x = 242,958.50

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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.