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Finding the Fourth Proportional to 272,437.71, 375,958.16 and 157,721.20

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Solution

The fourth proportional to 272,437.71, 375,958.16 and 157,721.20 is: 217,651.86

Step by Step Solution

  1. Step 1: Write the proportion equation
    272,437.71 : 375,958.16 = 157,721.20 : x
  2. Step 2: Convert to fraction form
    272,437.71/375,958.16 = 157,721.20/x
  3. Step 3: Cross multiply
    272,437.71x = 375,958.16 × 157,721.20
  4. Step 4: Simplify right side
    272,437.71x = 59,296,574,009.89
  5. Step 5: Solve for x
    x = 59,296,574,009.89/272,437.71
  6. Step 6: Final answer
    x = 217,651.86

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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.