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Finding the Fourth Proportional to 318,624.52, 477,796.55 and 168,830.28

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Solution

The fourth proportional to 318,624.52, 477,796.55 and 168,830.28 is: 253,171.12

Step by Step Solution

  1. Step 1: Write the proportion equation
    318,624.52 : 477,796.55 = 168,830.28 : x
  2. Step 2: Convert to fraction form
    318,624.52/477,796.55 = 168,830.28/x
  3. Step 3: Cross multiply
    318,624.52x = 477,796.55 × 168,830.28
  4. Step 4: Simplify right side
    318,624.52x = 80,666,525,319.53
  5. Step 5: Solve for x
    x = 80,666,525,319.53/318,624.52
  6. Step 6: Final answer
    x = 253,171.12

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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.