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Finding the Fourth Proportional to 272,763.76, 376,387.08 and 151,916.32

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Solution

The fourth proportional to 272,763.76, 376,387.08 and 151,916.32 is: 209,629.53

Step by Step Solution

  1. Step 1: Write the proportion equation
    272,763.76 : 376,387.08 = 151,916.32 : x
  2. Step 2: Convert to fraction form
    272,763.76/376,387.08 = 151,916.32/x
  3. Step 3: Cross multiply
    272,763.76x = 376,387.08 × 151,916.32
  4. Step 4: Simplify right side
    272,763.76x = 57,179,340,089.15
  5. Step 5: Solve for x
    x = 57,179,340,089.15/272,763.76
  6. Step 6: Final answer
    x = 209,629.53

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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.