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Finding the Fourth Proportional to 525,406.50, 788,035.89 and 170,423.61

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Solution

The fourth proportional to 525,406.50, 788,035.89 and 170,423.61 is: 255,611.46

Step by Step Solution

  1. Step 1: Write the proportion equation
    525,406.50 : 788,035.89 = 170,423.61 : x
  2. Step 2: Convert to fraction form
    525,406.50/788,035.89 = 170,423.61/x
  3. Step 3: Cross multiply
    525,406.50x = 788,035.89 × 170,423.61
  4. Step 4: Simplify right side
    525,406.50x = 134,299,921,183.36
  5. Step 5: Solve for x
    x = 134,299,921,183.36/525,406.50
  6. Step 6: Final answer
    x = 255,611.46

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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.