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Finding the Fourth Proportional to 401,347.71, 601,644.90 and 134,921.88

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Solution

The fourth proportional to 401,347.71, 601,644.90 and 134,921.88 is: 202,256.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    401,347.71 : 601,644.90 = 134,921.88 : x
  2. Step 2: Convert to fraction form
    401,347.71/601,644.90 = 134,921.88/x
  3. Step 3: Cross multiply
    401,347.71x = 601,644.90 × 134,921.88
  4. Step 4: Simplify right side
    401,347.71x = 81,175,061,000.41
  5. Step 5: Solve for x
    x = 81,175,061,000.41/401,347.71
  6. Step 6: Final answer
    x = 202,256.20

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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.