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Finding the Fourth Proportional to 270,651.60, 405,977.40 and 70,971.60

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Solution

The fourth proportional to 270,651.60, 405,977.40 and 70,971.60 is: 106,457.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    270,651.60 : 405,977.40 = 70,971.60 : x
  2. Step 2: Convert to fraction form
    270,651.60/405,977.40 = 70,971.60/x
  3. Step 3: Cross multiply
    270,651.60x = 405,977.40 × 70,971.60
  4. Step 4: Simplify right side
    270,651.60x = 28,812,865,641.84
  5. Step 5: Solve for x
    x = 28,812,865,641.84/270,651.60
  6. Step 6: Final answer
    x = 106,457.40

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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.