Home / 223,740.38-308,775.51-128,261.43

Finding the Fourth Proportional to 223,740.38, 308,775.51 and 128,261.43

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Solution

The fourth proportional to 223,740.38, 308,775.51 and 128,261.43 is: 177,008.68

Step by Step Solution

  1. Step 1: Write the proportion equation
    223,740.38 : 308,775.51 = 128,261.43 : x
  2. Step 2: Convert to fraction form
    223,740.38/308,775.51 = 128,261.43/x
  3. Step 3: Cross multiply
    223,740.38x = 308,775.51 × 128,261.43
  4. Step 4: Simplify right side
    223,740.38x = 39,603,988,461.58
  5. Step 5: Solve for x
    x = 39,603,988,461.58/223,740.38
  6. Step 6: Final answer
    x = 177,008.68

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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.