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Finding the Fourth Proportional to 443,556, 612,107.28 and 242,352

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Solution

The fourth proportional to 443,556, 612,107.28 and 242,352 is: 334,445.76

Step by Step Solution

  1. Step 1: Write the proportion equation
    443,556 : 612,107.28 = 242,352 : x
  2. Step 2: Convert to fraction form
    443,556/612,107.28 = 242,352/x
  3. Step 3: Cross multiply
    443,556x = 612,107.28 × 242,352
  4. Step 4: Simplify right side
    443,556x = 148,345,423,522.56
  5. Step 5: Solve for x
    x = 148,345,423,522.56/443,556
  6. Step 6: Final answer
    x = 334,445.76

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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.