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Finding the Fourth Proportional to 469,905.08, 648,469.58 and 255,045.20

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Solution

The fourth proportional to 469,905.08, 648,469.58 and 255,045.20 is: 351,962.68

Step by Step Solution

  1. Step 1: Write the proportion equation
    469,905.08 : 648,469.58 = 255,045.20 : x
  2. Step 2: Convert to fraction form
    469,905.08/648,469.58 = 255,045.20/x
  3. Step 3: Cross multiply
    469,905.08x = 648,469.58 × 255,045.20
  4. Step 4: Simplify right side
    469,905.08x = 165,389,049,207.44
  5. Step 5: Solve for x
    x = 165,389,049,207.44/469,905.08
  6. Step 6: Final answer
    x = 351,962.68

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.