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Finding the Fourth Proportional to 407,103.54, 609,838.83 and 207,415.86

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Solution

The fourth proportional to 407,103.54, 609,838.83 and 207,415.86 is: 310,707.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    407,103.54 : 609,838.83 = 207,415.86 : x
  2. Step 2: Convert to fraction form
    407,103.54/609,838.83 = 207,415.86/x
  3. Step 3: Cross multiply
    407,103.54x = 609,838.83 × 207,415.86
  4. Step 4: Simplify right side
    407,103.54x = 126,490,245,385.84
  5. Step 5: Solve for x
    x = 126,490,245,385.84/407,103.54
  6. Step 6: Final answer
    x = 310,707.80

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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.