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Finding the Fourth Proportional to 436,843.32, 655,030.08 and 256,990.92

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Solution

The fourth proportional to 436,843.32, 655,030.08 and 256,990.92 is: 385,348.19

Step by Step Solution

  1. Step 1: Write the proportion equation
    436,843.32 : 655,030.08 = 256,990.92 : x
  2. Step 2: Convert to fraction form
    436,843.32/655,030.08 = 256,990.92/x
  3. Step 3: Cross multiply
    436,843.32x = 655,030.08 × 256,990.92
  4. Step 4: Simplify right side
    436,843.32x = 168,336,782,886.87
  5. Step 5: Solve for x
    x = 168,336,782,886.87/436,843.32
  6. Step 6: Final answer
    x = 385,348.19

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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.