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Finding the Fourth Proportional to 259,855,674.72, 389,807,472.24 and 84,979,615.80

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Solution

The fourth proportional to 259,855,674.72, 389,807,472.24 and 84,979,615.80 is: 127,477,259.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    259,855,674.72 : 389,807,472.24 = 84,979,615.80 : x
  2. Step 2: Convert to fraction form
    259,855,674.72/389,807,472.24 = 84,979,615.80/x
  3. Step 3: Cross multiply
    259,855,674.72x = 389,807,472.24 × 84,979,615.80
  4. Step 4: Simplify right side
    259,855,674.72x = 33,125,689,226,924,364
  5. Step 5: Solve for x
    x = 33,125,689,226,924,364/259,855,674.72
  6. Step 6: Final answer
    x = 127,477,259.30

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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.