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Finding the Fourth Proportional to 547,486.12, 821,231.08 and 168,404.28

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Solution

The fourth proportional to 547,486.12, 821,231.08 and 168,404.28 is: 252,607.00

Step by Step Solution

  1. Step 1: Write the proportion equation
    547,486.12 : 821,231.08 = 168,404.28 : x
  2. Step 2: Convert to fraction form
    547,486.12/821,231.08 = 168,404.28/x
  3. Step 3: Cross multiply
    547,486.12x = 821,231.08 × 168,404.28
  4. Step 4: Simplify right side
    547,486.12x = 138,298,828,741.02
  5. Step 5: Solve for x
    x = 138,298,828,741.02/547,486.12
  6. Step 6: Final answer
    x = 252,607.00

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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.