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Finding the Fourth Proportional to 235,408.42, 324,870.03 and 127,985.86

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Solution

The fourth proportional to 235,408.42, 324,870.03 and 127,985.86 is: 176,623.97

Step by Step Solution

  1. Step 1: Write the proportion equation
    235,408.42 : 324,870.03 = 127,985.86 : x
  2. Step 2: Convert to fraction form
    235,408.42/324,870.03 = 127,985.86/x
  3. Step 3: Cross multiply
    235,408.42x = 324,870.03 × 127,985.86
  4. Step 4: Simplify right side
    235,408.42x = 41,578,767,913.50
  5. Step 5: Solve for x
    x = 41,578,767,913.50/235,408.42
  6. Step 6: Final answer
    x = 176,623.97

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.