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Finding the Fourth Proportional to 291,302.40, 436,953.60 and 172,912.80

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Solution

The fourth proportional to 291,302.40, 436,953.60 and 172,912.80 is: 259,369.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    291,302.40 : 436,953.60 = 172,912.80 : x
  2. Step 2: Convert to fraction form
    291,302.40/436,953.60 = 172,912.80/x
  3. Step 3: Cross multiply
    291,302.40x = 436,953.60 × 172,912.80
  4. Step 4: Simplify right side
    291,302.40x = 75,554,870,446.08
  5. Step 5: Solve for x
    x = 75,554,870,446.08/291,302.40
  6. Step 6: Final answer
    x = 259,369.20

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.