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Finding the Fourth Proportional to 539,486.40, 808,581.60 and 223,780.80

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Solution

The fourth proportional to 539,486.40, 808,581.60 and 223,780.80 is: 335,402.41

Step by Step Solution

  1. Step 1: Write the proportion equation
    539,486.40 : 808,581.60 = 223,780.80 : x
  2. Step 2: Convert to fraction form
    539,486.40/808,581.60 = 223,780.80/x
  3. Step 3: Cross multiply
    539,486.40x = 808,581.60 × 223,780.80
  4. Step 4: Simplify right side
    539,486.40x = 180,945,037,313.28
  5. Step 5: Solve for x
    x = 180,945,037,313.28/539,486.40
  6. Step 6: Final answer
    x = 335,402.41

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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.