Home / 385,389,313.56-531,835,924.82-209,177,299.80

Finding the Fourth Proportional to 385,389,313.56, 531,835,924.82 and 209,177,299.80

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Solution

The fourth proportional to 385,389,313.56, 531,835,924.82 and 209,177,299.80 is: 288,663,952.98

Step by Step Solution

  1. Step 1: Write the proportion equation
    385,389,313.56 : 531,835,924.82 = 209,177,299.80 : x
  2. Step 2: Convert to fraction form
    385,389,313.56/531,835,924.82 = 209,177,299.80/x
  3. Step 3: Cross multiply
    385,389,313.56x = 531,835,924.82 × 209,177,299.80
  4. Step 4: Simplify right side
    385,389,313.56x = 111,248,002,689,437,520
  5. Step 5: Solve for x
    x = 111,248,002,689,437,520/385,389,313.56
  6. Step 6: Final answer
    x = 288,663,952.98

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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.