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Finding the Fourth Proportional to 436,840.32, 655,025.58 and 256,987.92

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Solution

The fourth proportional to 436,840.32, 655,025.58 and 256,987.92 is: 385,343.69

Step by Step Solution

  1. Step 1: Write the proportion equation
    436,840.32 : 655,025.58 = 256,987.92 : x
  2. Step 2: Convert to fraction form
    436,840.32/655,025.58 = 256,987.92/x
  3. Step 3: Cross multiply
    436,840.32x = 655,025.58 × 256,987.92
  4. Step 4: Simplify right side
    436,840.32x = 168,333,661,350.99
  5. Step 5: Solve for x
    x = 168,333,661,350.99/436,840.32
  6. Step 6: Final answer
    x = 385,343.69

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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.