Home / 312,141.20-430,756.31-176,180.87

Finding the Fourth Proportional to 312,141.20, 430,756.31 and 176,180.87

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Solution

The fourth proportional to 312,141.20, 430,756.31 and 176,180.87 is: 243,130.43

Step by Step Solution

  1. Step 1: Write the proportion equation
    312,141.20 : 430,756.31 = 176,180.87 : x
  2. Step 2: Convert to fraction form
    312,141.20/430,756.31 = 176,180.87/x
  3. Step 3: Cross multiply
    312,141.20x = 430,756.31 × 176,180.87
  4. Step 4: Simplify right side
    312,141.20x = 75,891,022,971.13
  5. Step 5: Solve for x
    x = 75,891,022,971.13/312,141.20
  6. Step 6: Final answer
    x = 243,130.43

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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.