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Finding the Fourth Proportional to 389,775.05, 585,154.65 and 210,003.65

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Solution

The fourth proportional to 389,775.05, 585,154.65 and 210,003.65 is: 315,270.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    389,775.05 : 585,154.65 = 210,003.65 : x
  2. Step 2: Convert to fraction form
    389,775.05/585,154.65 = 210,003.65/x
  3. Step 3: Cross multiply
    389,775.05x = 585,154.65 × 210,003.65
  4. Step 4: Simplify right side
    389,775.05x = 122,884,612,314.47
  5. Step 5: Solve for x
    x = 122,884,612,314.47/389,775.05
  6. Step 6: Final answer
    x = 315,270.60

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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.