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Finding the Fourth Proportional to 315,794.90, 435,748.65 and 179,834.42

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Solution

The fourth proportional to 315,794.90, 435,748.65 and 179,834.42 is: 248,143.99

Step by Step Solution

  1. Step 1: Write the proportion equation
    315,794.90 : 435,748.65 = 179,834.42 : x
  2. Step 2: Convert to fraction form
    315,794.90/435,748.65 = 179,834.42/x
  3. Step 3: Cross multiply
    315,794.90x = 435,748.65 × 179,834.42
  4. Step 4: Simplify right side
    315,794.90x = 78,362,605,738.53
  5. Step 5: Solve for x
    x = 78,362,605,738.53/315,794.90
  6. Step 6: Final answer
    x = 248,143.99

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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.