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Finding the Fourth Proportional to 298,919,894.40, 448,379,841.60 and 217,290,556.80

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Solution

The fourth proportional to 298,919,894.40, 448,379,841.60 and 217,290,556.80 is: 325,935,835.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    298,919,894.40 : 448,379,841.60 = 217,290,556.80 : x
  2. Step 2: Convert to fraction form
    298,919,894.40/448,379,841.60 = 217,290,556.80/x
  3. Step 3: Cross multiply
    298,919,894.40x = 448,379,841.60 × 217,290,556.80
  4. Step 4: Simplify right side
    298,919,894.40x = 97,428,705,439,159,808
  5. Step 5: Solve for x
    x = 97,428,705,439,159,808/298,919,894.40
  6. Step 6: Final answer
    x = 325,935,835.20

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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.