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Finding the Fourth Proportional to 259,810.80, 390,066.60 and 166,498.80

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Solution

The fourth proportional to 259,810.80, 390,066.60 and 166,498.80 is: 249,972.75

Step by Step Solution

  1. Step 1: Write the proportion equation
    259,810.80 : 390,066.60 = 166,498.80 : x
  2. Step 2: Convert to fraction form
    259,810.80/390,066.60 = 166,498.80/x
  3. Step 3: Cross multiply
    259,810.80x = 390,066.60 × 166,498.80
  4. Step 4: Simplify right side
    259,810.80x = 64,945,620,820.08
  5. Step 5: Solve for x
    x = 64,945,620,820.08/259,810.80
  6. Step 6: Final answer
    x = 249,972.75

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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.