Home / 257,570.18-386,351.14-70,581.68

Finding the Fourth Proportional to 257,570.18, 386,351.14 and 70,581.68

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Solution

The fourth proportional to 257,570.18, 386,351.14 and 70,581.68 is: 105,871.39

Step by Step Solution

  1. Step 1: Write the proportion equation
    257,570.18 : 386,351.14 = 70,581.68 : x
  2. Step 2: Convert to fraction form
    257,570.18/386,351.14 = 70,581.68/x
  3. Step 3: Cross multiply
    257,570.18x = 386,351.14 × 70,581.68
  4. Step 4: Simplify right side
    257,570.18x = 27,269,312,531.12
  5. Step 5: Solve for x
    x = 27,269,312,531.12/257,570.18
  6. Step 6: Final answer
    x = 105,871.39

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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.