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Finding the Fourth Proportional to 436,009.98, 654,008.46 and 120,459.90

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Solution

The fourth proportional to 436,009.98, 654,008.46 and 120,459.90 is: 180,688.05

Step by Step Solution

  1. Step 1: Write the proportion equation
    436,009.98 : 654,008.46 = 120,459.90 : x
  2. Step 2: Convert to fraction form
    436,009.98/654,008.46 = 120,459.90/x
  3. Step 3: Cross multiply
    436,009.98x = 654,008.46 × 120,459.90
  4. Step 4: Simplify right side
    436,009.98x = 78,781,793,690.75
  5. Step 5: Solve for x
    x = 78,781,793,690.75/436,009.98
  6. Step 6: Final answer
    x = 180,688.05

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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.