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Finding the Fourth Proportional to 343,615.20, 515,422.80 and 175,653.60

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Solution

The fourth proportional to 343,615.20, 515,422.80 and 175,653.60 is: 263,480.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    343,615.20 : 515,422.80 = 175,653.60 : x
  2. Step 2: Convert to fraction form
    343,615.20/515,422.80 = 175,653.60/x
  3. Step 3: Cross multiply
    343,615.20x = 515,422.80 × 175,653.60
  4. Step 4: Simplify right side
    343,615.20x = 90,535,870,342.08
  5. Step 5: Solve for x
    x = 90,535,870,342.08/343,615.20
  6. Step 6: Final answer
    x = 263,480.40

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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.