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Finding the Fourth Proportional to 272,585.50, 408,878.16 and 72,900.70

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Solution

The fourth proportional to 272,585.50, 408,878.16 and 72,900.70 is: 109,351.03

Step by Step Solution

  1. Step 1: Write the proportion equation
    272,585.50 : 408,878.16 = 72,900.70 : x
  2. Step 2: Convert to fraction form
    272,585.50/408,878.16 = 72,900.70/x
  3. Step 3: Cross multiply
    272,585.50x = 408,878.16 × 72,900.70
  4. Step 4: Simplify right side
    272,585.50x = 29,807,505,083.08
  5. Step 5: Solve for x
    x = 29,807,505,083.08/272,585.50
  6. Step 6: Final answer
    x = 109,351.03

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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.