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Finding the Fourth Proportional to 272,007.60, 408,049.80 and 84,999.60

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Solution

The fourth proportional to 272,007.60, 408,049.80 and 84,999.60 is: 127,511.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    272,007.60 : 408,049.80 = 84,999.60 : x
  2. Step 2: Convert to fraction form
    272,007.60/408,049.80 = 84,999.60/x
  3. Step 3: Cross multiply
    272,007.60x = 408,049.80 × 84,999.60
  4. Step 4: Simplify right side
    272,007.60x = 34,684,069,780.08
  5. Step 5: Solve for x
    x = 34,684,069,780.08/272,007.60
  6. Step 6: Final answer
    x = 127,511.40

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1.5x scale

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.