Home / 384,972.48-531,178.56-215,200.80

Finding the Fourth Proportional to 384,972.48, 531,178.56 and 215,200.80

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Solution

The fourth proportional to 384,972.48, 531,178.56 and 215,200.80 is: 296,930.45

Step by Step Solution

  1. Step 1: Write the proportion equation
    384,972.48 : 531,178.56 = 215,200.80 : x
  2. Step 2: Convert to fraction form
    384,972.48/531,178.56 = 215,200.80/x
  3. Step 3: Cross multiply
    384,972.48x = 531,178.56 × 215,200.80
  4. Step 4: Simplify right side
    384,972.48x = 114,310,051,054.85
  5. Step 5: Solve for x
    x = 114,310,051,054.85/384,972.48
  6. Step 6: Final answer
    x = 296,930.45

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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.