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Finding the Fourth Proportional to 272,094.09, 408,139.80 and 69,689.81

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Solution

The fourth proportional to 272,094.09, 408,139.80 and 69,689.81 is: 104,534.37

Step by Step Solution

  1. Step 1: Write the proportion equation
    272,094.09 : 408,139.80 = 69,689.81 : x
  2. Step 2: Convert to fraction form
    272,094.09/408,139.80 = 69,689.81/x
  3. Step 3: Cross multiply
    272,094.09x = 408,139.80 × 69,689.81
  4. Step 4: Simplify right side
    272,094.09x = 28,443,183,074.74
  5. Step 5: Solve for x
    x = 28,443,183,074.74/272,094.09
  6. Step 6: Final answer
    x = 104,534.37

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.