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Finding the Fourth Proportional to 452,500.90, 678,319.35 and 168,115.30

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Solution

The fourth proportional to 452,500.90, 678,319.35 and 168,115.30 is: 252,012.45

Step by Step Solution

  1. Step 1: Write the proportion equation
    452,500.90 : 678,319.35 = 168,115.30 : x
  2. Step 2: Convert to fraction form
    452,500.90/678,319.35 = 168,115.30/x
  3. Step 3: Cross multiply
    452,500.90x = 678,319.35 × 168,115.30
  4. Step 4: Simplify right side
    452,500.90x = 114,035,861,021.06
  5. Step 5: Solve for x
    x = 114,035,861,021.06/452,500.90
  6. Step 6: Final answer
    x = 252,012.45

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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.