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Finding the Fourth Proportional to 303,485.80, 455,228.70 and 103,812.70

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Solution

The fourth proportional to 303,485.80, 455,228.70 and 103,812.70 is: 155,719.05

Step by Step Solution

  1. Step 1: Write the proportion equation
    303,485.80 : 455,228.70 = 103,812.70 : x
  2. Step 2: Convert to fraction form
    303,485.80/455,228.70 = 103,812.70/x
  3. Step 3: Cross multiply
    303,485.80x = 455,228.70 × 103,812.70
  4. Step 4: Simplify right side
    303,485.80x = 47,258,520,464.49
  5. Step 5: Solve for x
    x = 47,258,520,464.49/303,485.80
  6. Step 6: Final answer
    x = 155,719.05

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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.