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Finding the Fourth Proportional to 372,378.63, 513,867.38 and 211,230.22

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Solution

The fourth proportional to 372,378.63, 513,867.38 and 211,230.22 is: 291,489.12

Step by Step Solution

  1. Step 1: Write the proportion equation
    372,378.63 : 513,867.38 = 211,230.22 : x
  2. Step 2: Convert to fraction form
    372,378.63/513,867.38 = 211,230.22/x
  3. Step 3: Cross multiply
    372,378.63x = 513,867.38 × 211,230.22
  4. Step 4: Simplify right side
    372,378.63x = 108,544,319,200.15
  5. Step 5: Solve for x
    x = 108,544,319,200.15/372,378.63
  6. Step 6: Final answer
    x = 291,489.12

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1.5x scale

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.