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Finding the Fourth Proportional to 372,451.44, 513,994.64 and 211,313.28

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Solution

The fourth proportional to 372,451.44, 513,994.64 and 211,313.28 is: 291,618.94

Step by Step Solution

  1. Step 1: Write the proportion equation
    372,451.44 : 513,994.64 = 211,313.28 : x
  2. Step 2: Convert to fraction form
    372,451.44/513,994.64 = 211,313.28/x
  3. Step 3: Cross multiply
    372,451.44x = 513,994.64 × 211,313.28
  4. Step 4: Simplify right side
    372,451.44x = 108,613,893,280.82
  5. Step 5: Solve for x
    x = 108,613,893,280.82/372,451.44
  6. Step 6: Final answer
    x = 291,618.94

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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.