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Finding the Fourth Proportional to 319,144.08, 478,714.68 and 82,466.64

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Solution

The fourth proportional to 319,144.08, 478,714.68 and 82,466.64 is: 123,699.59

Step by Step Solution

  1. Step 1: Write the proportion equation
    319,144.08 : 478,714.68 = 82,466.64 : x
  2. Step 2: Convert to fraction form
    319,144.08/478,714.68 = 82,466.64/x
  3. Step 3: Cross multiply
    319,144.08x = 478,714.68 × 82,466.64
  4. Step 4: Simplify right side
    319,144.08x = 39,477,991,178.28
  5. Step 5: Solve for x
    x = 39,477,991,178.28/319,144.08
  6. Step 6: Final answer
    x = 123,699.59

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1.5x scale

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.