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Finding the Fourth Proportional to 354,040.65, 531,524.03 and 210,209.05

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Solution

The fourth proportional to 354,040.65, 531,524.03 and 210,209.05 is: 315,588.51

Step by Step Solution

  1. Step 1: Write the proportion equation
    354,040.65 : 531,524.03 = 210,209.05 : x
  2. Step 2: Convert to fraction form
    354,040.65/531,524.03 = 210,209.05/x
  3. Step 3: Cross multiply
    354,040.65x = 531,524.03 × 210,209.05
  4. Step 4: Simplify right side
    354,040.65x = 111,731,160,595.18
  5. Step 5: Solve for x
    x = 111,731,160,595.18/354,040.65
  6. Step 6: Final answer
    x = 315,588.51

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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.