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Finding the Fourth Proportional to 451,239.60, 622,631.70 and 257,558.88

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Solution

The fourth proportional to 451,239.60, 622,631.70 and 257,558.88 is: 355,386.19

Step by Step Solution

  1. Step 1: Write the proportion equation
    451,239.60 : 622,631.70 = 257,558.88 : x
  2. Step 2: Convert to fraction form
    451,239.60/622,631.70 = 257,558.88/x
  3. Step 3: Cross multiply
    451,239.60x = 622,631.70 × 257,558.88
  4. Step 4: Simplify right side
    451,239.60x = 160,364,323,304.50
  5. Step 5: Solve for x
    x = 160,364,323,304.50/451,239.60
  6. Step 6: Final answer
    x = 355,386.19

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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.