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Finding the Fourth Proportional to 539,140.40, 807,835.80 and 339,102.80

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Solution

The fourth proportional to 539,140.40, 807,835.80 and 339,102.80 is: 508,103.98

Step by Step Solution

  1. Step 1: Write the proportion equation
    539,140.40 : 807,835.80 = 339,102.80 : x
  2. Step 2: Convert to fraction form
    539,140.40/807,835.80 = 339,102.80/x
  3. Step 3: Cross multiply
    539,140.40x = 807,835.80 × 339,102.80
  4. Step 4: Simplify right side
    539,140.40x = 273,939,381,720.24
  5. Step 5: Solve for x
    x = 273,939,381,720.24/539,140.40
  6. Step 6: Final answer
    x = 508,103.98

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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.