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Finding the Fourth Proportional to 243,468.55, 365,242.06 and 74,988.82

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Solution

The fourth proportional to 243,468.55, 365,242.06 and 74,988.82 is: 112,495.31

Step by Step Solution

  1. Step 1: Write the proportion equation
    243,468.55 : 365,242.06 = 74,988.82 : x
  2. Step 2: Convert to fraction form
    243,468.55/365,242.06 = 74,988.82/x
  3. Step 3: Cross multiply
    243,468.55x = 365,242.06 × 74,988.82
  4. Step 4: Simplify right side
    243,468.55x = 27,389,069,267.56
  5. Step 5: Solve for x
    x = 27,389,069,267.56/243,468.55
  6. Step 6: Final answer
    x = 112,495.31

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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.