Home / 372,178.86-513,490.96-211,021.26

Finding the Fourth Proportional to 372,178.86, 513,490.96 and 211,021.26

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Solution

The fourth proportional to 372,178.86, 513,490.96 and 211,021.26 is: 291,143.64

Step by Step Solution

  1. Step 1: Write the proportion equation
    372,178.86 : 513,490.96 = 211,021.26 : x
  2. Step 2: Convert to fraction form
    372,178.86/513,490.96 = 211,021.26/x
  3. Step 3: Cross multiply
    372,178.86x = 513,490.96 × 211,021.26
  4. Step 4: Simplify right side
    372,178.86x = 108,357,509,377.81
  5. Step 5: Solve for x
    x = 108,357,509,377.81/372,178.86
  6. Step 6: Final answer
    x = 291,143.64

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.