Home / 312,628.48-431,421.63-176,659.54

Finding the Fourth Proportional to 312,628.48, 431,421.63 and 176,659.54

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Solution

The fourth proportional to 312,628.48, 431,421.63 and 176,659.54 is: 243,786.96

Step by Step Solution

  1. Step 1: Write the proportion equation
    312,628.48 : 431,421.63 = 176,659.54 : x
  2. Step 2: Convert to fraction form
    312,628.48/431,421.63 = 176,659.54/x
  3. Step 3: Cross multiply
    312,628.48x = 431,421.63 × 176,659.54
  4. Step 4: Simplify right side
    312,628.48x = 76,214,746,701.85
  5. Step 5: Solve for x
    x = 76,214,746,701.85/312,628.48
  6. Step 6: Final answer
    x = 243,786.96

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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.