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Finding the Fourth Proportional to 443,813.39, 665,442.71 and 187,514.21

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Solution

The fourth proportional to 443,813.39, 665,442.71 and 187,514.21 is: 281,154.12

Step by Step Solution

  1. Step 1: Write the proportion equation
    443,813.39 : 665,442.71 = 187,514.21 : x
  2. Step 2: Convert to fraction form
    443,813.39/665,442.71 = 187,514.21/x
  3. Step 3: Cross multiply
    443,813.39x = 665,442.71 × 187,514.21
  4. Step 4: Simplify right side
    443,813.39x = 124,779,964,065.91
  5. Step 5: Solve for x
    x = 124,779,964,065.91/443,813.39
  6. Step 6: Final answer
    x = 281,154.12

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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.