Home / 345,490.34-517,842.39-210,256.07

Finding the Fourth Proportional to 345,490.34, 517,842.39 and 210,256.07

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Solution

The fourth proportional to 345,490.34, 517,842.39 and 210,256.07 is: 315,144.86

Step by Step Solution

  1. Step 1: Write the proportion equation
    345,490.34 : 517,842.39 = 210,256.07 : x
  2. Step 2: Convert to fraction form
    345,490.34/517,842.39 = 210,256.07/x
  3. Step 3: Cross multiply
    345,490.34x = 517,842.39 × 210,256.07
  4. Step 4: Simplify right side
    345,490.34x = 108,879,505,800.81
  5. Step 5: Solve for x
    x = 108,879,505,800.81/345,490.34
  6. Step 6: Final answer
    x = 315,144.86

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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.