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Finding the Fourth Proportional to 340,292.28, 510,512.34 and 103,628.88

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Solution

The fourth proportional to 340,292.28, 510,512.34 and 103,628.88 is: 155,465.83

Step by Step Solution

  1. Step 1: Write the proportion equation
    340,292.28 : 510,512.34 = 103,628.88 : x
  2. Step 2: Convert to fraction form
    340,292.28/510,512.34 = 103,628.88/x
  3. Step 3: Cross multiply
    340,292.28x = 510,512.34 × 103,628.88
  4. Step 4: Simplify right side
    340,292.28x = 52,903,822,020.38
  5. Step 5: Solve for x
    x = 52,903,822,020.38/340,292.28
  6. Step 6: Final answer
    x = 155,465.83

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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.