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Finding the Fourth Proportional to 638,048.72, 957,076.80 and 164,701.76

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Solution

The fourth proportional to 638,048.72, 957,076.80 and 164,701.76 is: 247,053.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    638,048.72 : 957,076.80 = 164,701.76 : x
  2. Step 2: Convert to fraction form
    638,048.72/957,076.80 = 164,701.76/x
  3. Step 3: Cross multiply
    638,048.72x = 957,076.80 × 164,701.76
  4. Step 4: Simplify right side
    638,048.72x = 157,632,233,415.17
  5. Step 5: Solve for x
    x = 157,632,233,415.17/638,048.72
  6. Step 6: Final answer
    x = 247,053.60

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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.