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Finding the Fourth Proportional to 212,245.60, 292,892.88 and 115,446.40

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Solution

The fourth proportional to 212,245.60, 292,892.88 and 115,446.40 is: 159,312.74

Step by Step Solution

  1. Step 1: Write the proportion equation
    212,245.60 : 292,892.88 = 115,446.40 : x
  2. Step 2: Convert to fraction form
    212,245.60/292,892.88 = 115,446.40/x
  3. Step 3: Cross multiply
    212,245.60x = 292,892.88 × 115,446.40
  4. Step 4: Simplify right side
    212,245.60x = 33,813,428,581.63
  5. Step 5: Solve for x
    x = 33,813,428,581.63/212,245.60
  6. Step 6: Final answer
    x = 159,312.74

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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.