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Finding the Fourth Proportional to 257,082.32, 385,619.40 and 70,093.82

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Solution

The fourth proportional to 257,082.32, 385,619.40 and 70,093.82 is: 105,139.62

Step by Step Solution

  1. Step 1: Write the proportion equation
    257,082.32 : 385,619.40 = 70,093.82 : x
  2. Step 2: Convert to fraction form
    257,082.32/385,619.40 = 70,093.82/x
  3. Step 3: Cross multiply
    257,082.32x = 385,619.40 × 70,093.82
  4. Step 4: Simplify right side
    257,082.32x = 27,029,537,776.16
  5. Step 5: Solve for x
    x = 27,029,537,776.16/257,082.32
  6. Step 6: Final answer
    x = 105,139.62

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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.