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Finding the Fourth Proportional to 279,284.76, 385,419.87 and 151,967.34

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Solution

The fourth proportional to 279,284.76, 385,419.87 and 151,967.34 is: 209,718.68

Step by Step Solution

  1. Step 1: Write the proportion equation
    279,284.76 : 385,419.87 = 151,967.34 : x
  2. Step 2: Convert to fraction form
    279,284.76/385,419.87 = 151,967.34/x
  3. Step 3: Cross multiply
    279,284.76x = 385,419.87 × 151,967.34
  4. Step 4: Simplify right side
    279,284.76x = 58,571,232,427.05
  5. Step 5: Solve for x
    x = 58,571,232,427.05/279,284.76
  6. Step 6: Final answer
    x = 209,718.68

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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.