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Finding the Fourth Proportional to 201,769,203.80, 302,706,949.80 and 72,363,320.30

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Solution

The fourth proportional to 201,769,203.80, 302,706,949.80 and 72,363,320.30 is: 108,564,040.26

Step by Step Solution

  1. Step 1: Write the proportion equation
    201,769,203.80 : 302,706,949.80 = 72,363,320.30 : x
  2. Step 2: Convert to fraction form
    201,769,203.80/302,706,949.80 = 72,363,320.30/x
  3. Step 3: Cross multiply
    201,769,203.80x = 302,706,949.80 × 72,363,320.30
  4. Step 4: Simplify right side
    201,769,203.80x = 21,904,879,965,413,420
  5. Step 5: Solve for x
    x = 21,904,879,965,413,420/201,769,203.80
  6. Step 6: Final answer
    x = 108,564,040.26

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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.