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Finding the Fourth Proportional to 368,794,325.50, 508,965,191.08 and 210,031,169.13

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Solution

The fourth proportional to 368,794,325.50, 508,965,191.08 and 210,031,169.13 is: 289,859,541.59

Step by Step Solution

  1. Step 1: Write the proportion equation
    368,794,325.50 : 508,965,191.08 = 210,031,169.13 : x
  2. Step 2: Convert to fraction form
    368,794,325.50/508,965,191.08 = 210,031,169.13/x
  3. Step 3: Cross multiply
    368,794,325.50x = 508,965,191.08 × 210,031,169.13
  4. Step 4: Simplify right side
    368,794,325.50x = 106,898,554,128,481,168
  5. Step 5: Solve for x
    x = 106,898,554,128,481,168/368,794,325.50
  6. Step 6: Final answer
    x = 289,859,541.59

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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.