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Finding the Fourth Proportional to 388,678.44, 583,328.70 and 201,743.40

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Solution

The fourth proportional to 388,678.44, 583,328.70 and 201,743.40 is: 302,776.55

Step by Step Solution

  1. Step 1: Write the proportion equation
    388,678.44 : 583,328.70 = 201,743.40 : x
  2. Step 2: Convert to fraction form
    388,678.44/583,328.70 = 201,743.40/x
  3. Step 3: Cross multiply
    388,678.44x = 583,328.70 × 201,743.40
  4. Step 4: Simplify right side
    388,678.44x = 117,682,715,255.58
  5. Step 5: Solve for x
    x = 117,682,715,255.58/388,678.44
  6. Step 6: Final answer
    x = 302,776.55

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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.