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Finding the Fourth Proportional to 638,304.76, 957,481.44 and 238,903.48

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Solution

The fourth proportional to 638,304.76, 957,481.44 and 238,903.48 is: 358,364.31

Step by Step Solution

  1. Step 1: Write the proportion equation
    638,304.76 : 957,481.44 = 238,903.48 : x
  2. Step 2: Convert to fraction form
    638,304.76/957,481.44 = 238,903.48/x
  3. Step 3: Cross multiply
    638,304.76x = 957,481.44 × 238,903.48
  4. Step 4: Simplify right side
    638,304.76x = 228,745,648,051.41
  5. Step 5: Solve for x
    x = 228,745,648,051.41/638,304.76
  6. Step 6: Final answer
    x = 358,364.31

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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.