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Finding the Fourth Proportional to 279,427.60, 419,141.40 and 101,875.60

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Solution

The fourth proportional to 279,427.60, 419,141.40 and 101,875.60 is: 152,813.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    279,427.60 : 419,141.40 = 101,875.60 : x
  2. Step 2: Convert to fraction form
    279,427.60/419,141.40 = 101,875.60/x
  3. Step 3: Cross multiply
    279,427.60x = 419,141.40 × 101,875.60
  4. Step 4: Simplify right side
    279,427.60x = 42,700,281,609.84
  5. Step 5: Solve for x
    x = 42,700,281,609.84/279,427.60
  6. Step 6: Final answer
    x = 152,813.40

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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.