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Finding the Fourth Proportional to 343,756.76, 516,011.94 and 273,133.40

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Solution

The fourth proportional to 343,756.76, 516,011.94 and 273,133.40 is: 409,999.49

Step by Step Solution

  1. Step 1: Write the proportion equation
    343,756.76 : 516,011.94 = 273,133.40 : x
  2. Step 2: Convert to fraction form
    343,756.76/516,011.94 = 273,133.40/x
  3. Step 3: Cross multiply
    343,756.76x = 516,011.94 × 273,133.40
  4. Step 4: Simplify right side
    343,756.76x = 140,940,095,612.80
  5. Step 5: Solve for x
    x = 140,940,095,612.80/343,756.76
  6. Step 6: Final answer
    x = 409,999.49

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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.