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Finding the Fourth Proportional to 463,361.45, 639,248.76 and 281,927.93

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Solution

The fourth proportional to 463,361.45, 639,248.76 and 281,927.93 is: 388,944.91

Step by Step Solution

  1. Step 1: Write the proportion equation
    463,361.45 : 639,248.76 = 281,927.93 : x
  2. Step 2: Convert to fraction form
    463,361.45/639,248.76 = 281,927.93/x
  3. Step 3: Cross multiply
    463,361.45x = 639,248.76 × 281,927.93
  4. Step 4: Simplify right side
    463,361.45x = 180,222,076,465.62
  5. Step 5: Solve for x
    x = 180,222,076,465.62/463,361.45
  6. Step 6: Final answer
    x = 388,944.91

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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.