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Finding the Fourth Proportional to 219,996,287.80, 329,994,431.70 and 117,959,615.80

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Solution

The fourth proportional to 219,996,287.80, 329,994,431.70 and 117,959,615.80 is: 176,939,423.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    219,996,287.80 : 329,994,431.70 = 117,959,615.80 : x
  2. Step 2: Convert to fraction form
    219,996,287.80/329,994,431.70 = 117,959,615.80/x
  3. Step 3: Cross multiply
    219,996,287.80x = 329,994,431.70 × 117,959,615.80
  4. Step 4: Simplify right side
    219,996,287.80x = 38,926,016,379,471,336
  5. Step 5: Solve for x
    x = 38,926,016,379,471,336/219,996,287.80
  6. Step 6: Final answer
    x = 176,939,423.70

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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.