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Finding the Fourth Proportional to 385,330.60, 577,218.30 and 267,135.40

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Solution

The fourth proportional to 385,330.60, 577,218.30 and 267,135.40 is: 400,164.02

Step by Step Solution

  1. Step 1: Write the proportion equation
    385,330.60 : 577,218.30 = 267,135.40 : x
  2. Step 2: Convert to fraction form
    385,330.60/577,218.30 = 267,135.40/x
  3. Step 3: Cross multiply
    385,330.60x = 577,218.30 × 267,135.40
  4. Step 4: Simplify right side
    385,330.60x = 154,195,441,457.82
  5. Step 5: Solve for x
    x = 154,195,441,457.82/385,330.60
  6. Step 6: Final answer
    x = 400,164.02

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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.