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Finding the Fourth Proportional to 499,421.40, 749,601.90 and 262,933.80

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Solution

The fourth proportional to 499,421.40, 749,601.90 and 262,933.80 is: 394,648.04

Step by Step Solution

  1. Step 1: Write the proportion equation
    499,421.40 : 749,601.90 = 262,933.80 : x
  2. Step 2: Convert to fraction form
    499,421.40/749,601.90 = 262,933.80/x
  3. Step 3: Cross multiply
    499,421.40x = 749,601.90 × 262,933.80
  4. Step 4: Simplify right side
    499,421.40x = 197,095,676,054.22
  5. Step 5: Solve for x
    x = 197,095,676,054.22/499,421.40
  6. Step 6: Final answer
    x = 394,648.04

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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.