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Finding the Fourth Proportional to 272,485.69, 408,794.18 and 85,497.19

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Solution

The fourth proportional to 272,485.69, 408,794.18 and 85,497.19 is: 128,266.38

Step by Step Solution

  1. Step 1: Write the proportion equation
    272,485.69 : 408,794.18 = 85,497.19 : x
  2. Step 2: Convert to fraction form
    272,485.69/408,794.18 = 85,497.19/x
  3. Step 3: Cross multiply
    272,485.69x = 408,794.18 × 85,497.19
  4. Step 4: Simplify right side
    272,485.69x = 34,950,752,228.88
  5. Step 5: Solve for x
    x = 34,950,752,228.88/272,485.69
  6. Step 6: Final answer
    x = 128,266.38

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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.