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Finding the Fourth Proportional to 313,230.96, 432,617.58 and 206,279.04

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Solution

The fourth proportional to 313,230.96, 432,617.58 and 206,279.04 is: 284,901.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    313,230.96 : 432,617.58 = 206,279.04 : x
  2. Step 2: Convert to fraction form
    313,230.96/432,617.58 = 206,279.04/x
  3. Step 3: Cross multiply
    313,230.96x = 432,617.58 × 206,279.04
  4. Step 4: Simplify right side
    313,230.96x = 89,239,939,089.52
  5. Step 5: Solve for x
    x = 89,239,939,089.52/313,230.96
  6. Step 6: Final answer
    x = 284,901.40

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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.