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Finding the Fourth Proportional to 285,767.70, 399,549.90 and 285,767.70

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Solution

The fourth proportional to 285,767.70, 399,549.90 and 285,767.70 is: 399,549.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    285,767.70 : 399,549.90 = 285,767.70 : x
  2. Step 2: Convert to fraction form
    285,767.70/399,549.90 = 285,767.70/x
  3. Step 3: Cross multiply
    285,767.70x = 399,549.90 × 285,767.70
  4. Step 4: Simplify right side
    285,767.70x = 114,178,455,958.23
  5. Step 5: Solve for x
    x = 114,178,455,958.23/285,767.70
  6. Step 6: Final answer
    x = 399,549.90

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.40) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.