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Finding the Fourth Proportional to 429,935.60, 644,903.40 and 134,447.60

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Solution

The fourth proportional to 429,935.60, 644,903.40 and 134,447.60 is: 201,671.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    429,935.60 : 644,903.40 = 134,447.60 : x
  2. Step 2: Convert to fraction form
    429,935.60/644,903.40 = 134,447.60/x
  3. Step 3: Cross multiply
    429,935.60x = 644,903.40 × 134,447.60
  4. Step 4: Simplify right side
    429,935.60x = 86,705,714,361.84
  5. Step 5: Solve for x
    x = 86,705,714,361.84/429,935.60
  6. Step 6: Final answer
    x = 201,671.40

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Similar ratio
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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.