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Finding the Fourth Proportional to 443,075.70, 664,181.55 and 253,341.30

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Solution

The fourth proportional to 443,075.70, 664,181.55 and 253,341.30 is: 379,764.94

Step by Step Solution

  1. Step 1: Write the proportion equation
    443,075.70 : 664,181.55 = 253,341.30 : x
  2. Step 2: Convert to fraction form
    443,075.70/664,181.55 = 253,341.30/x
  3. Step 3: Cross multiply
    443,075.70x = 664,181.55 × 253,341.30
  4. Step 4: Simplify right side
    443,075.70x = 168,264,617,313.02
  5. Step 5: Solve for x
    x = 168,264,617,313.02/443,075.70
  6. Step 6: Final answer
    x = 379,764.94

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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.