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Finding the Fourth Proportional to 186,429.80, 279,644.70 and 53,314.40

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Solution

The fourth proportional to 186,429.80, 279,644.70 and 53,314.40 is: 79,971.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    186,429.80 : 279,644.70 = 53,314.40 : x
  2. Step 2: Convert to fraction form
    186,429.80/279,644.70 = 53,314.40/x
  3. Step 3: Cross multiply
    186,429.80x = 279,644.70 × 53,314.40
  4. Step 4: Simplify right side
    186,429.80x = 14,909,089,393.68
  5. Step 5: Solve for x
    x = 14,909,089,393.68/186,429.80
  6. Step 6: Final answer
    x = 79,971.60

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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.