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Finding the Fourth Proportional to 279,253.88, 385,368.60 and 151,930.04

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Solution

The fourth proportional to 279,253.88, 385,368.60 and 151,930.04 is: 209,662.50

Step by Step Solution

  1. Step 1: Write the proportion equation
    279,253.88 : 385,368.60 = 151,930.04 : x
  2. Step 2: Convert to fraction form
    279,253.88/385,368.60 = 151,930.04/x
  3. Step 3: Cross multiply
    279,253.88x = 385,368.60 × 151,930.04
  4. Step 4: Simplify right side
    279,253.88x = 58,549,066,812.74
  5. Step 5: Solve for x
    x = 58,549,066,812.74/279,253.88
  6. Step 6: Final answer
    x = 209,662.50

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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.