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Finding the Fourth Proportional to 275,615.10, 380,325.51 and 154,746.90

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Solution

The fourth proportional to 275,615.10, 380,325.51 and 154,746.90 is: 213,537.62

Step by Step Solution

  1. Step 1: Write the proportion equation
    275,615.10 : 380,325.51 = 154,746.90 : x
  2. Step 2: Convert to fraction form
    275,615.10/380,325.51 = 154,746.90/x
  3. Step 3: Cross multiply
    275,615.10x = 380,325.51 × 154,746.90
  4. Step 4: Simplify right side
    275,615.10x = 58,854,193,663.42
  5. Step 5: Solve for x
    x = 58,854,193,663.42/275,615.10
  6. Step 6: Final answer
    x = 213,537.62

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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.