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Finding the Fourth Proportional to 438,999.64, 658,047.48 and 172,652.20

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Solution

The fourth proportional to 438,999.64, 658,047.48 and 172,652.20 is: 258,800.54

Step by Step Solution

  1. Step 1: Write the proportion equation
    438,999.64 : 658,047.48 = 172,652.20 : x
  2. Step 2: Convert to fraction form
    438,999.64/658,047.48 = 172,652.20/x
  3. Step 3: Cross multiply
    438,999.64x = 658,047.48 × 172,652.20
  4. Step 4: Simplify right side
    438,999.64x = 113,613,345,126.46
  5. Step 5: Solve for x
    x = 113,613,345,126.46/438,999.64
  6. Step 6: Final answer
    x = 258,800.54

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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.