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Finding the Fourth Proportional to 315,909.16, 435,954.48 and 179,955.65

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Solution

The fourth proportional to 315,909.16, 435,954.48 and 179,955.65 is: 248,338.71

Step by Step Solution

  1. Step 1: Write the proportion equation
    315,909.16 : 435,954.48 = 179,955.65 : x
  2. Step 2: Convert to fraction form
    315,909.16/435,954.48 = 179,955.65/x
  3. Step 3: Cross multiply
    315,909.16x = 435,954.48 × 179,955.65
  4. Step 4: Simplify right side
    315,909.16x = 78,452,471,818.81
  5. Step 5: Solve for x
    x = 78,452,471,818.81/315,909.16
  6. Step 6: Final answer
    x = 248,338.71

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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.