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Finding the Fourth Proportional to 515,795.48, 773,656.64 and 136,707.80

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Solution

The fourth proportional to 515,795.48, 773,656.64 and 136,707.80 is: 205,052.00

Step by Step Solution

  1. Step 1: Write the proportion equation
    515,795.48 : 773,656.64 = 136,707.80 : x
  2. Step 2: Convert to fraction form
    515,795.48/773,656.64 = 136,707.80/x
  3. Step 3: Cross multiply
    515,795.48x = 773,656.64 × 136,707.80
  4. Step 4: Simplify right side
    515,795.48x = 105,764,897,209.79
  5. Step 5: Solve for x
    x = 105,764,897,209.79/515,795.48
  6. Step 6: Final answer
    x = 205,052.00

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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.