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Finding the Fourth Proportional to 272,509.31, 375,741.18 and 186,509.79

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Solution

The fourth proportional to 272,509.31, 375,741.18 and 186,509.79 is: 257,163.35

Step by Step Solution

  1. Step 1: Write the proportion equation
    272,509.31 : 375,741.18 = 186,509.79 : x
  2. Step 2: Convert to fraction form
    272,509.31/375,741.18 = 186,509.79/x
  3. Step 3: Cross multiply
    272,509.31x = 375,741.18 × 186,509.79
  4. Step 4: Simplify right side
    272,509.31x = 70,079,408,576.15
  5. Step 5: Solve for x
    x = 70,079,408,576.15/272,509.31
  6. Step 6: Final answer
    x = 257,163.35

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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.