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Finding the Fourth Proportional to 368,723,993.81, 508,833,092.03 and 201,456,655.34

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Solution

The fourth proportional to 368,723,993.81, 508,833,092.03 and 201,456,655.34 is: 278,006,895.58

Step by Step Solution

  1. Step 1: Write the proportion equation
    368,723,993.81 : 508,833,092.03 = 201,456,655.34 : x
  2. Step 2: Convert to fraction form
    368,723,993.81/508,833,092.03 = 201,456,655.34/x
  3. Step 3: Cross multiply
    368,723,993.81x = 508,833,092.03 × 201,456,655.34
  4. Step 4: Simplify right side
    368,723,993.81x = 102,507,812,843,122,768
  5. Step 5: Solve for x
    x = 102,507,812,843,122,768/368,723,993.81
  6. Step 6: Final answer
    x = 278,006,895.58

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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.