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Finding the Fourth Proportional to 279,468.63, 385,653.96 and 152,143.92

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Solution

The fourth proportional to 279,468.63, 385,653.96 and 152,143.92 is: 209,951.67

Step by Step Solution

  1. Step 1: Write the proportion equation
    279,468.63 : 385,653.96 = 152,143.92 : x
  2. Step 2: Convert to fraction form
    279,468.63/385,653.96 = 152,143.92/x
  3. Step 3: Cross multiply
    279,468.63x = 385,653.96 × 152,143.92
  4. Step 4: Simplify right side
    279,468.63x = 58,674,905,237.92
  5. Step 5: Solve for x
    x = 58,674,905,237.92/279,468.63
  6. Step 6: Final answer
    x = 209,951.67

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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.