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Finding the Fourth Proportional to 272,479.75, 375,978.71 and 151,620.66

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Solution

The fourth proportional to 272,479.75, 375,978.71 and 151,620.66 is: 209,212.39

Step by Step Solution

  1. Step 1: Write the proportion equation
    272,479.75 : 375,978.71 = 151,620.66 : x
  2. Step 2: Convert to fraction form
    272,479.75/375,978.71 = 151,620.66/x
  3. Step 3: Cross multiply
    272,479.75x = 375,978.71 × 151,620.66
  4. Step 4: Simplify right side
    272,479.75x = 57,006,140,535.20
  5. Step 5: Solve for x
    x = 57,006,140,535.20/272,479.75
  6. Step 6: Final answer
    x = 209,212.39

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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.