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Finding the Fourth Proportional to 340,632.95, 511,009.56 and 140,841.45

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Solution

The fourth proportional to 340,632.95, 511,009.56 and 140,841.45 is: 211,287.04

Step by Step Solution

  1. Step 1: Write the proportion equation
    340,632.95 : 511,009.56 = 140,841.45 : x
  2. Step 2: Convert to fraction form
    340,632.95/511,009.56 = 140,841.45/x
  3. Step 3: Cross multiply
    340,632.95x = 511,009.56 × 140,841.45
  4. Step 4: Simplify right side
    340,632.95x = 71,971,327,394.26
  5. Step 5: Solve for x
    x = 71,971,327,394.26/340,632.95
  6. Step 6: Final answer
    x = 211,287.04

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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.