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Finding the Fourth Proportional to 272,588.01, 408,881.92 and 72,903.21

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Solution

The fourth proportional to 272,588.01, 408,881.92 and 72,903.21 is: 109,354.79

Step by Step Solution

  1. Step 1: Write the proportion equation
    272,588.01 : 408,881.92 = 72,903.21 : x
  2. Step 2: Convert to fraction form
    272,588.01/408,881.92 = 72,903.21/x
  3. Step 3: Cross multiply
    272,588.01x = 408,881.92 × 72,903.21
  4. Step 4: Simplify right side
    272,588.01x = 29,808,804,478.96
  5. Step 5: Solve for x
    x = 29,808,804,478.96/272,588.01
  6. Step 6: Final answer
    x = 109,354.79

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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.