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Finding the Fourth Proportional to 368,487.76, 508,575 and 213,416.32

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Solution

The fourth proportional to 368,487.76, 508,575 and 213,416.32 is: 294,550.37

Step by Step Solution

  1. Step 1: Write the proportion equation
    368,487.76 : 508,575 = 213,416.32 : x
  2. Step 2: Convert to fraction form
    368,487.76/508,575 = 213,416.32/x
  3. Step 3: Cross multiply
    368,487.76x = 508,575 × 213,416.32
  4. Step 4: Simplify right side
    368,487.76x = 108,538,204,944
  5. Step 5: Solve for x
    x = 108,538,204,944/368,487.76
  6. Step 6: Final answer
    x = 294,550.37

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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.