Home / 315,786.09-435,784.89-170,591.91

Finding the Fourth Proportional to 315,786.09, 435,784.89 and 170,591.91

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Solution

The fourth proportional to 315,786.09, 435,784.89 and 170,591.91 is: 235,416.88

Step by Step Solution

  1. Step 1: Write the proportion equation
    315,786.09 : 435,784.89 = 170,591.91 : x
  2. Step 2: Convert to fraction form
    315,786.09/435,784.89 = 170,591.91/x
  3. Step 3: Cross multiply
    315,786.09x = 435,784.89 × 170,591.91
  4. Step 4: Simplify right side
    315,786.09x = 74,341,376,734.24
  5. Step 5: Solve for x
    x = 74,341,376,734.24/315,786.09
  6. Step 6: Final answer
    x = 235,416.88

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.