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Finding the Fourth Proportional to 245,662.71, 368,498.61 and 77,179.88

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Solution

The fourth proportional to 245,662.71, 368,498.61 and 77,179.88 is: 115,771.24

Step by Step Solution

  1. Step 1: Write the proportion equation
    245,662.71 : 368,498.61 = 77,179.88 : x
  2. Step 2: Convert to fraction form
    245,662.71/368,498.61 = 77,179.88/x
  3. Step 3: Cross multiply
    245,662.71x = 368,498.61 × 77,179.88
  4. Step 4: Simplify right side
    245,662.71x = 28,440,676,657.47
  5. Step 5: Solve for x
    x = 28,440,676,657.47/245,662.71
  6. Step 6: Final answer
    x = 115,771.24

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.