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Finding the Fourth Proportional to 463,362.45, 639,250.14 and 281,928.93

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Solution

The fourth proportional to 463,362.45, 639,250.14 and 281,928.93 is: 388,946.29

Step by Step Solution

  1. Step 1: Write the proportion equation
    463,362.45 : 639,250.14 = 281,928.93 : x
  2. Step 2: Convert to fraction form
    463,362.45/639,250.14 = 281,928.93/x
  3. Step 3: Cross multiply
    463,362.45x = 639,250.14 × 281,928.93
  4. Step 4: Simplify right side
    463,362.45x = 180,223,107,972.55
  5. Step 5: Solve for x
    x = 180,223,107,972.55/463,362.45
  6. Step 6: Final answer
    x = 388,946.29

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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.