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Finding the Fourth Proportional to 207,212.64, 285,996.60 and 135,459.60

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Solution

The fourth proportional to 207,212.64, 285,996.60 and 135,459.60 is: 186,962.46

Step by Step Solution

  1. Step 1: Write the proportion equation
    207,212.64 : 285,996.60 = 135,459.60 : x
  2. Step 2: Convert to fraction form
    207,212.64/285,996.60 = 135,459.60/x
  3. Step 3: Cross multiply
    207,212.64x = 285,996.60 × 135,459.60
  4. Step 4: Simplify right side
    207,212.64x = 38,740,985,037.36
  5. Step 5: Solve for x
    x = 38,740,985,037.36/207,212.64
  6. Step 6: Final answer
    x = 186,962.46

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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.