Home / 369,739.57-554,609.36-120,421.57

Finding the Fourth Proportional to 369,739.57, 554,609.36 and 120,421.57

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Solution

The fourth proportional to 369,739.57, 554,609.36 and 120,421.57 is: 180,632.36

Step by Step Solution

  1. Step 1: Write the proportion equation
    369,739.57 : 554,609.36 = 120,421.57 : x
  2. Step 2: Convert to fraction form
    369,739.57/554,609.36 = 120,421.57/x
  3. Step 3: Cross multiply
    369,739.57x = 554,609.36 × 120,421.57
  4. Step 4: Simplify right side
    369,739.57x = 66,786,929,867.90
  5. Step 5: Solve for x
    x = 66,786,929,867.90/369,739.57
  6. Step 6: Final answer
    x = 180,632.36

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Similar ratio
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1.5x scale

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.