Home / 384,770.70-531,337.86-257,815.35

Finding the Fourth Proportional to 384,770.70, 531,337.86 and 257,815.35

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Solution

The fourth proportional to 384,770.70, 531,337.86 and 257,815.35 is: 356,022.58

Step by Step Solution

  1. Step 1: Write the proportion equation
    384,770.70 : 531,337.86 = 257,815.35 : x
  2. Step 2: Convert to fraction form
    384,770.70/531,337.86 = 257,815.35/x
  3. Step 3: Cross multiply
    384,770.70x = 531,337.86 × 257,815.35
  4. Step 4: Simplify right side
    384,770.70x = 136,987,056,344.15
  5. Step 5: Solve for x
    x = 136,987,056,344.15/384,770.70
  6. Step 6: Final answer
    x = 356,022.58

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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.