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Finding the Fourth Proportional to 210,452.58, 315,678.87 and 52,681.03

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Solution

The fourth proportional to 210,452.58, 315,678.87 and 52,681.03 is: 79,021.55

Step by Step Solution

  1. Step 1: Write the proportion equation
    210,452.58 : 315,678.87 = 52,681.03 : x
  2. Step 2: Convert to fraction form
    210,452.58/315,678.87 = 52,681.03/x
  3. Step 3: Cross multiply
    210,452.58x = 315,678.87 × 52,681.03
  4. Step 4: Simplify right side
    210,452.58x = 16,630,289,007.33
  5. Step 5: Solve for x
    x = 16,630,289,007.33/210,452.58
  6. Step 6: Final answer
    x = 79,021.55

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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.