Home / 324,815.40-487,050.30-137,615.40

Finding the Fourth Proportional to 324,815.40, 487,050.30 and 137,615.40

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Solution

The fourth proportional to 324,815.40, 487,050.30 and 137,615.40 is: 206,349.89

Step by Step Solution

  1. Step 1: Write the proportion equation
    324,815.40 : 487,050.30 = 137,615.40 : x
  2. Step 2: Convert to fraction form
    324,815.40/487,050.30 = 137,615.40/x
  3. Step 3: Cross multiply
    324,815.40x = 487,050.30 × 137,615.40
  4. Step 4: Simplify right side
    324,815.40x = 67,025,621,854.62
  5. Step 5: Solve for x
    x = 67,025,621,854.62/324,815.40
  6. Step 6: Final answer
    x = 206,349.89

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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.