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Finding the Fourth Proportional to 515,909.60, 773,605.20 and 235,109.60

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Solution

The fourth proportional to 515,909.60, 773,605.20 and 235,109.60 is: 352,546.28

Step by Step Solution

  1. Step 1: Write the proportion equation
    515,909.60 : 773,605.20 = 235,109.60 : x
  2. Step 2: Convert to fraction form
    515,909.60/773,605.20 = 235,109.60/x
  3. Step 3: Cross multiply
    515,909.60x = 773,605.20 × 235,109.60
  4. Step 4: Simplify right side
    515,909.60x = 181,882,009,129.92
  5. Step 5: Solve for x
    x = 181,882,009,129.92/515,909.60
  6. Step 6: Final answer
    x = 352,546.28

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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.