Home / 387,933.36-535,399.68-218,200.32

Finding the Fourth Proportional to 387,933.36, 535,399.68 and 218,200.32

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Solution

The fourth proportional to 387,933.36, 535,399.68 and 218,200.32 is: 301,145.49

Step by Step Solution

  1. Step 1: Write the proportion equation
    387,933.36 : 535,399.68 = 218,200.32 : x
  2. Step 2: Convert to fraction form
    387,933.36/535,399.68 = 218,200.32/x
  3. Step 3: Cross multiply
    387,933.36x = 535,399.68 × 218,200.32
  4. Step 4: Simplify right side
    387,933.36x = 116,824,381,503.90
  5. Step 5: Solve for x
    x = 116,824,381,503.90/387,933.36
  6. Step 6: Final answer
    x = 301,145.49

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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.