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Finding the Fourth Proportional to 375,425.15, 518,082.58 and 203,338.83

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Solution

The fourth proportional to 375,425.15, 518,082.58 and 203,338.83 is: 280,605.35

Step by Step Solution

  1. Step 1: Write the proportion equation
    375,425.15 : 518,082.58 = 203,338.83 : x
  2. Step 2: Convert to fraction form
    375,425.15/518,082.58 = 203,338.83/x
  3. Step 3: Cross multiply
    375,425.15x = 518,082.58 × 203,338.83
  4. Step 4: Simplify right side
    375,425.15x = 105,346,303,799.57
  5. Step 5: Solve for x
    x = 105,346,303,799.57/375,425.15
  6. Step 6: Final answer
    x = 280,605.35

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.