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Finding the Fourth Proportional to 315,907.16, 435,951.72 and 179,953.65

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Solution

The fourth proportional to 315,907.16, 435,951.72 and 179,953.65 is: 248,335.95

Step by Step Solution

  1. Step 1: Write the proportion equation
    315,907.16 : 435,951.72 = 179,953.65 : x
  2. Step 2: Convert to fraction form
    315,907.16/435,951.72 = 179,953.65/x
  3. Step 3: Cross multiply
    315,907.16x = 435,951.72 × 179,953.65
  4. Step 4: Simplify right side
    315,907.16x = 78,451,103,237.78
  5. Step 5: Solve for x
    x = 78,451,103,237.78/315,907.16
  6. Step 6: Final answer
    x = 248,335.95

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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.