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Finding the Fourth Proportional to 270,639.60, 406,056.60 and 112,916.40

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Solution

The fourth proportional to 270,639.60, 406,056.60 and 112,916.40 is: 169,415.15

Step by Step Solution

  1. Step 1: Write the proportion equation
    270,639.60 : 406,056.60 = 112,916.40 : x
  2. Step 2: Convert to fraction form
    270,639.60/406,056.60 = 112,916.40/x
  3. Step 3: Cross multiply
    270,639.60x = 406,056.60 × 112,916.40
  4. Step 4: Simplify right side
    270,639.60x = 45,850,449,468.24
  5. Step 5: Solve for x
    x = 45,850,449,468.24/270,639.60
  6. Step 6: Final answer
    x = 169,415.15

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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.