Home / 817,131.20-1,225,697.12-256,209.44

Finding the Fourth Proportional to 817,131.20, 1,225,697.12 and 256,209.44

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Solution

The fourth proportional to 817,131.20, 1,225,697.12 and 256,209.44 is: 384,314.26

Step by Step Solution

  1. Step 1: Write the proportion equation
    817,131.20 : 1,225,697.12 = 256,209.44 : x
  2. Step 2: Convert to fraction form
    817,131.20/1,225,697.12 = 256,209.44/x
  3. Step 3: Cross multiply
    817,131.20x = 1,225,697.12 × 256,209.44
  4. Step 4: Simplify right side
    817,131.20x = 314,035,172,724.81
  5. Step 5: Solve for x
    x = 314,035,172,724.81/817,131.20
  6. Step 6: Final answer
    x = 384,314.26

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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.