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Finding the Fourth Proportional to 393,699, 590,548.50 and 127,682.04

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Solution

The fourth proportional to 393,699, 590,548.50 and 127,682.04 is: 191,523.06

Step by Step Solution

  1. Step 1: Write the proportion equation
    393,699 : 590,548.50 = 127,682.04 : x
  2. Step 2: Convert to fraction form
    393,699/590,548.50 = 127,682.04/x
  3. Step 3: Cross multiply
    393,699x = 590,548.50 × 127,682.04
  4. Step 4: Simplify right side
    393,699x = 75,402,437,198.94
  5. Step 5: Solve for x
    x = 75,402,437,198.94/393,699
  6. Step 6: Final answer
    x = 191,523.06

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.