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Finding the Fourth Proportional to 243,738.88, 365,607.78 and 66,271.66

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Solution

The fourth proportional to 243,738.88, 365,607.78 and 66,271.66 is: 99,407.34

Step by Step Solution

  1. Step 1: Write the proportion equation
    243,738.88 : 365,607.78 = 66,271.66 : x
  2. Step 2: Convert to fraction form
    243,738.88/365,607.78 = 66,271.66/x
  3. Step 3: Cross multiply
    243,738.88x = 365,607.78 × 66,271.66
  4. Step 4: Simplify right side
    243,738.88x = 24,229,434,489.51
  5. Step 5: Solve for x
    x = 24,229,434,489.51/243,738.88
  6. Step 6: Final answer
    x = 99,407.34

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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.