Home / 235,822.38-325,440.65-128,398.25

Finding the Fourth Proportional to 235,822.38, 325,440.65 and 128,398.25

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Solution

The fourth proportional to 235,822.38, 325,440.65 and 128,398.25 is: 177,192.72

Step by Step Solution

  1. Step 1: Write the proportion equation
    235,822.38 : 325,440.65 = 128,398.25 : x
  2. Step 2: Convert to fraction form
    235,822.38/325,440.65 = 128,398.25/x
  3. Step 3: Cross multiply
    235,822.38x = 325,440.65 × 128,398.25
  4. Step 4: Simplify right side
    235,822.38x = 41,786,009,938.86
  5. Step 5: Solve for x
    x = 41,786,009,938.86/235,822.38
  6. Step 6: Final answer
    x = 177,192.72

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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.