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Finding the Fourth Proportional to 535,914.12, 803,259.63 and 215,861.03

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Solution

The fourth proportional to 535,914.12, 803,259.63 and 215,861.03 is: 323,545.21

Step by Step Solution

  1. Step 1: Write the proportion equation
    535,914.12 : 803,259.63 = 215,861.03 : x
  2. Step 2: Convert to fraction form
    535,914.12/803,259.63 = 215,861.03/x
  3. Step 3: Cross multiply
    535,914.12x = 803,259.63 × 215,861.03
  4. Step 4: Simplify right side
    535,914.12x = 173,392,447,072.92
  5. Step 5: Solve for x
    x = 173,392,447,072.92/535,914.12
  6. Step 6: Final answer
    x = 323,545.21

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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.