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Finding the Fourth Proportional to 323,140.80, 484,711.20 and 256,218.60

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Solution

The fourth proportional to 323,140.80, 484,711.20 and 256,218.60 is: 384,327.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    323,140.80 : 484,711.20 = 256,218.60 : x
  2. Step 2: Convert to fraction form
    323,140.80/484,711.20 = 256,218.60/x
  3. Step 3: Cross multiply
    323,140.80x = 484,711.20 × 256,218.60
  4. Step 4: Simplify right side
    323,140.80x = 124,192,025,068.32
  5. Step 5: Solve for x
    x = 124,192,025,068.32/323,140.80
  6. Step 6: Final answer
    x = 384,327.90

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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.