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Finding the Fourth Proportional to 345,628.28, 518,425.14 and 135,304.76

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Solution

The fourth proportional to 345,628.28, 518,425.14 and 135,304.76 is: 202,950.38

Step by Step Solution

  1. Step 1: Write the proportion equation
    345,628.28 : 518,425.14 = 135,304.76 : x
  2. Step 2: Convert to fraction form
    345,628.28/518,425.14 = 135,304.76/x
  3. Step 3: Cross multiply
    345,628.28x = 518,425.14 × 135,304.76
  4. Step 4: Simplify right side
    345,628.28x = 70,145,389,145.67
  5. Step 5: Solve for x
    x = 70,145,389,145.67/345,628.28
  6. Step 6: Final answer
    x = 202,950.38

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1.5x scale

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.