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Finding the Fourth Proportional to 271,978.18, 375,222.40 and 157,235.72

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Solution

The fourth proportional to 271,978.18, 375,222.40 and 157,235.72 is: 216,923.15

Step by Step Solution

  1. Step 1: Write the proportion equation
    271,978.18 : 375,222.40 = 157,235.72 : x
  2. Step 2: Convert to fraction form
    271,978.18/375,222.40 = 157,235.72/x
  3. Step 3: Cross multiply
    271,978.18x = 375,222.40 × 157,235.72
  4. Step 4: Simplify right side
    271,978.18x = 58,998,364,224.13
  5. Step 5: Solve for x
    x = 58,998,364,224.13/271,978.18
  6. Step 6: Final answer
    x = 216,923.15

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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.