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Finding the Fourth Proportional to 272,628.95, 408,948.90 and 72,949.02

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Solution

The fourth proportional to 272,628.95, 408,948.90 and 72,949.02 is: 109,425.00

Step by Step Solution

  1. Step 1: Write the proportion equation
    272,628.95 : 408,948.90 = 72,949.02 : x
  2. Step 2: Convert to fraction form
    272,628.95/408,948.90 = 72,949.02/x
  3. Step 3: Cross multiply
    272,628.95x = 408,948.90 × 72,949.02
  4. Step 4: Simplify right side
    272,628.95x = 29,832,421,485.08
  5. Step 5: Solve for x
    x = 29,832,421,485.08/272,628.95
  6. Step 6: Final answer
    x = 109,425.00

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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.