Home / 236,409.10-326,232.57-128,978.26

Finding the Fourth Proportional to 236,409.10, 326,232.57 and 128,978.26

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Solution

The fourth proportional to 236,409.10, 326,232.57 and 128,978.26 is: 177,983.46

Step by Step Solution

  1. Step 1: Write the proportion equation
    236,409.10 : 326,232.57 = 128,978.26 : x
  2. Step 2: Convert to fraction form
    236,409.10/326,232.57 = 128,978.26/x
  3. Step 3: Cross multiply
    236,409.10x = 326,232.57 × 128,978.26
  4. Step 4: Simplify right side
    236,409.10x = 42,076,909,233.93
  5. Step 5: Solve for x
    x = 42,076,909,233.93/236,409.10
  6. Step 6: Final answer
    x = 177,983.46

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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.