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Finding the Fourth Proportional to 322,830.70, 484,246.05 and 205,024.30

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Solution

The fourth proportional to 322,830.70, 484,246.05 and 205,024.30 is: 307,536.45

Step by Step Solution

  1. Step 1: Write the proportion equation
    322,830.70 : 484,246.05 = 205,024.30 : x
  2. Step 2: Convert to fraction form
    322,830.70/484,246.05 = 205,024.30/x
  3. Step 3: Cross multiply
    322,830.70x = 484,246.05 × 205,024.30
  4. Step 4: Simplify right side
    322,830.70x = 99,282,207,429.02
  5. Step 5: Solve for x
    x = 99,282,207,429.02/322,830.70
  6. Step 6: Final answer
    x = 307,536.45

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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.