Home / 236,400.69-326,232.24-128,969.96

Finding the Fourth Proportional to 236,400.69, 326,232.24 and 128,969.96

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Solution

The fourth proportional to 236,400.69, 326,232.24 and 128,969.96 is: 177,978.15

Step by Step Solution

  1. Step 1: Write the proportion equation
    236,400.69 : 326,232.24 = 128,969.96 : x
  2. Step 2: Convert to fraction form
    236,400.69/326,232.24 = 128,969.96/x
  3. Step 3: Cross multiply
    236,400.69x = 326,232.24 × 128,969.96
  4. Step 4: Simplify right side
    236,400.69x = 42,074,157,312.35
  5. Step 5: Solve for x
    x = 42,074,157,312.35/236,400.69
  6. Step 6: Final answer
    x = 177,978.15

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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.