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Finding the Fourth Proportional to 243,112.59, 364,655.70 and 74,632.95

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Solution

The fourth proportional to 243,112.59, 364,655.70 and 74,632.95 is: 111,945.38

Step by Step Solution

  1. Step 1: Write the proportion equation
    243,112.59 : 364,655.70 = 74,632.95 : x
  2. Step 2: Convert to fraction form
    243,112.59/364,655.70 = 74,632.95/x
  3. Step 3: Cross multiply
    243,112.59x = 364,655.70 × 74,632.95
  4. Step 4: Simplify right side
    243,112.59x = 27,215,330,625.32
  5. Step 5: Solve for x
    x = 27,215,330,625.32/243,112.59
  6. Step 6: Final answer
    x = 111,945.38

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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.