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Finding the Fourth Proportional to 214,999.60, 322,384.20 and 90,199.60

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Solution

The fourth proportional to 214,999.60, 322,384.20 and 90,199.60 is: 135,251.07

Step by Step Solution

  1. Step 1: Write the proportion equation
    214,999.60 : 322,384.20 = 90,199.60 : x
  2. Step 2: Convert to fraction form
    214,999.60/322,384.20 = 90,199.60/x
  3. Step 3: Cross multiply
    214,999.60x = 322,384.20 × 90,199.60
  4. Step 4: Simplify right side
    214,999.60x = 29,078,925,886.32
  5. Step 5: Solve for x
    x = 29,078,925,886.32/214,999.60
  6. Step 6: Final answer
    x = 135,251.07

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1.5x scale

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.