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Finding the Fourth Proportional to 428,038.91, 590,699.88 and 246,747.54

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Solution

The fourth proportional to 428,038.91, 590,699.88 and 246,747.54 is: 340,515.17

Step by Step Solution

  1. Step 1: Write the proportion equation
    428,038.91 : 590,699.88 = 246,747.54 : x
  2. Step 2: Convert to fraction form
    428,038.91/590,699.88 = 246,747.54/x
  3. Step 3: Cross multiply
    428,038.91x = 590,699.88 × 246,747.54
  4. Step 4: Simplify right side
    428,038.91x = 145,753,742,268.30
  5. Step 5: Solve for x
    x = 145,753,742,268.30/428,038.91
  6. Step 6: Final answer
    x = 340,515.17

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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.