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Finding the Fourth Proportional to 393,493.35, 543,004.79 and 232,400.55

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Solution

The fourth proportional to 393,493.35, 543,004.79 and 232,400.55 is: 320,703.29

Step by Step Solution

  1. Step 1: Write the proportion equation
    393,493.35 : 543,004.79 = 232,400.55 : x
  2. Step 2: Convert to fraction form
    393,493.35/543,004.79 = 232,400.55/x
  3. Step 3: Cross multiply
    393,493.35x = 543,004.79 × 232,400.55
  4. Step 4: Simplify right side
    393,493.35x = 126,194,610,686.63
  5. Step 5: Solve for x
    x = 126,194,610,686.63/393,493.35
  6. Step 6: Final answer
    x = 320,703.29

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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.