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Finding the Fourth Proportional to 303,011.80, 454,517.70 and 256,355.80

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Solution

The fourth proportional to 303,011.80, 454,517.70 and 256,355.80 is: 384,533.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    303,011.80 : 454,517.70 = 256,355.80 : x
  2. Step 2: Convert to fraction form
    303,011.80/454,517.70 = 256,355.80/x
  3. Step 3: Cross multiply
    303,011.80x = 454,517.70 × 256,355.80
  4. Step 4: Simplify right side
    303,011.80x = 116,518,248,597.66
  5. Step 5: Solve for x
    x = 116,518,248,597.66/303,011.80
  6. Step 6: Final answer
    x = 384,533.70

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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.