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Finding the Fourth Proportional to 186,434.64, 279,604.98 and 53,315.64

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Solution

The fourth proportional to 186,434.64, 279,604.98 and 53,315.64 is: 79,960.02

Step by Step Solution

  1. Step 1: Write the proportion equation
    186,434.64 : 279,604.98 = 53,315.64 : x
  2. Step 2: Convert to fraction form
    186,434.64/279,604.98 = 53,315.64/x
  3. Step 3: Cross multiply
    186,434.64x = 279,604.98 × 53,315.64
  4. Step 4: Simplify right side
    186,434.64x = 14,907,318,455.89
  5. Step 5: Solve for x
    x = 14,907,318,455.89/186,434.64
  6. Step 6: Final answer
    x = 79,960.02

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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.