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Finding the Fourth Proportional to 366,620.40, 505,251.24 and 285,920.40

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Solution

The fourth proportional to 366,620.40, 505,251.24 and 285,920.40 is: 394,036.00

Step by Step Solution

  1. Step 1: Write the proportion equation
    366,620.40 : 505,251.24 = 285,920.40 : x
  2. Step 2: Convert to fraction form
    366,620.40/505,251.24 = 285,920.40/x
  3. Step 3: Cross multiply
    366,620.40x = 505,251.24 × 285,920.40
  4. Step 4: Simplify right side
    366,620.40x = 144,461,636,641.30
  5. Step 5: Solve for x
    x = 144,461,636,641.30/366,620.40
  6. Step 6: Final answer
    x = 394,036.00

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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.