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Finding the Fourth Proportional to 272,438.71, 375,959.54 and 157,722.20

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Solution

The fourth proportional to 272,438.71, 375,959.54 and 157,722.20 is: 217,653.23

Step by Step Solution

  1. Step 1: Write the proportion equation
    272,438.71 : 375,959.54 = 157,722.20 : x
  2. Step 2: Convert to fraction form
    272,438.71/375,959.54 = 157,722.20/x
  3. Step 3: Cross multiply
    272,438.71x = 375,959.54 × 157,722.20
  4. Step 4: Simplify right side
    272,438.71x = 59,297,165,759.79
  5. Step 5: Solve for x
    x = 59,297,165,759.79/272,438.71
  6. Step 6: Final answer
    x = 217,653.23

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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.