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Finding the Fourth Proportional to 260,297.55, 390,543.53 and 102,635.91

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Solution

The fourth proportional to 260,297.55, 390,543.53 and 102,635.91 is: 153,992.19

Step by Step Solution

  1. Step 1: Write the proportion equation
    260,297.55 : 390,543.53 = 102,635.91 : x
  2. Step 2: Convert to fraction form
    260,297.55/390,543.53 = 102,635.91/x
  3. Step 3: Cross multiply
    260,297.55x = 390,543.53 × 102,635.91
  4. Step 4: Simplify right side
    260,297.55x = 40,083,790,082.98
  5. Step 5: Solve for x
    x = 40,083,790,082.98/260,297.55
  6. Step 6: Final answer
    x = 153,992.19

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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.