Home / 257,541.40-386,312.10-219,487.60

Finding the Fourth Proportional to 257,541.40, 386,312.10 and 219,487.60

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Solution

The fourth proportional to 257,541.40, 386,312.10 and 219,487.60 is: 329,231.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    257,541.40 : 386,312.10 = 219,487.60 : x
  2. Step 2: Convert to fraction form
    257,541.40/386,312.10 = 219,487.60/x
  3. Step 3: Cross multiply
    257,541.40x = 386,312.10 × 219,487.60
  4. Step 4: Simplify right side
    257,541.40x = 84,790,715,679.96
  5. Step 5: Solve for x
    x = 84,790,715,679.96/257,541.40
  6. Step 6: Final answer
    x = 329,231.40

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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.