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Finding the Fourth Proportional to 257,010.90, 383,676.87 and 223,389.90

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Solution

The fourth proportional to 257,010.90, 383,676.87 and 223,389.90 is: 333,486.00

Step by Step Solution

  1. Step 1: Write the proportion equation
    257,010.90 : 383,676.87 = 223,389.90 : x
  2. Step 2: Convert to fraction form
    257,010.90/383,676.87 = 223,389.90/x
  3. Step 3: Cross multiply
    257,010.90x = 383,676.87 × 223,389.90
  4. Step 4: Simplify right side
    257,010.90x = 85,709,537,621.61
  5. Step 5: Solve for x
    x = 85,709,537,621.61/257,010.90
  6. Step 6: Final answer
    x = 333,486.00

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Why These Related Problems?

These problems maintain the same ratio (1.49) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.