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Finding the Fourth Proportional to 428,173.56, 590,884.47 and 234,586.53

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Solution

The fourth proportional to 428,173.56, 590,884.47 and 234,586.53 is: 323,732.13

Step by Step Solution

  1. Step 1: Write the proportion equation
    428,173.56 : 590,884.47 = 234,586.53 : x
  2. Step 2: Convert to fraction form
    428,173.56/590,884.47 = 234,586.53/x
  3. Step 3: Cross multiply
    428,173.56x = 590,884.47 × 234,586.53
  4. Step 4: Simplify right side
    428,173.56x = 138,613,537,448.19
  5. Step 5: Solve for x
    x = 138,613,537,448.19/428,173.56
  6. Step 6: Final answer
    x = 323,732.13

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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.