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Finding the Fourth Proportional to 368,820.91, 508,996.36 and 223,640.56

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Solution

The fourth proportional to 368,820.91, 508,996.36 and 223,640.56 is: 308,638.22

Step by Step Solution

  1. Step 1: Write the proportion equation
    368,820.91 : 508,996.36 = 223,640.56 : x
  2. Step 2: Convert to fraction form
    368,820.91/508,996.36 = 223,640.56/x
  3. Step 3: Cross multiply
    368,820.91x = 508,996.36 × 223,640.56
  4. Step 4: Simplify right side
    368,820.91x = 113,832,230,646.18
  5. Step 5: Solve for x
    x = 113,832,230,646.18/368,820.91
  6. Step 6: Final answer
    x = 308,638.22

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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.