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Finding the Fourth Proportional to 279,253.50, 385,371.54 and 151,930.02

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Solution

The fourth proportional to 279,253.50, 385,371.54 and 151,930.02 is: 209,664.36

Step by Step Solution

  1. Step 1: Write the proportion equation
    279,253.50 : 385,371.54 = 151,930.02 : x
  2. Step 2: Convert to fraction form
    279,253.50/385,371.54 = 151,930.02/x
  3. Step 3: Cross multiply
    279,253.50x = 385,371.54 × 151,930.02
  4. Step 4: Simplify right side
    279,253.50x = 58,549,505,779.63
  5. Step 5: Solve for x
    x = 58,549,505,779.63/279,253.50
  6. Step 6: Final answer
    x = 209,664.36

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1.5x scale

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.