Home / 257,783.43-386,582.90-89,258.51

Finding the Fourth Proportional to 257,783.43, 386,582.90 and 89,258.51

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Solution

The fourth proportional to 257,783.43, 386,582.90 and 89,258.51 is: 133,855.82

Step by Step Solution

  1. Step 1: Write the proportion equation
    257,783.43 : 386,582.90 = 89,258.51 : x
  2. Step 2: Convert to fraction form
    257,783.43/386,582.90 = 89,258.51/x
  3. Step 3: Cross multiply
    257,783.43x = 386,582.90 × 89,258.51
  4. Step 4: Simplify right side
    257,783.43x = 34,505,811,991.11
  5. Step 5: Solve for x
    x = 34,505,811,991.11/257,783.43
  6. Step 6: Final answer
    x = 133,855.82

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.