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Finding the Fourth Proportional to 518,145.50, 777,329.40 and 293,613.50

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Solution

The fourth proportional to 518,145.50, 777,329.40 and 293,613.50 is: 440,483.23

Step by Step Solution

  1. Step 1: Write the proportion equation
    518,145.50 : 777,329.40 = 293,613.50 : x
  2. Step 2: Convert to fraction form
    518,145.50/777,329.40 = 293,613.50/x
  3. Step 3: Cross multiply
    518,145.50x = 777,329.40 × 293,613.50
  4. Step 4: Simplify right side
    518,145.50x = 228,234,405,786.90
  5. Step 5: Solve for x
    x = 228,234,405,786.90/518,145.50
  6. Step 6: Final answer
    x = 440,483.23

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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.