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Finding the Fourth Proportional to 243,005.60, 335,346.80 and 135,575.60

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Solution

The fourth proportional to 243,005.60, 335,346.80 and 135,575.60 is: 187,093.81

Step by Step Solution

  1. Step 1: Write the proportion equation
    243,005.60 : 335,346.80 = 135,575.60 : x
  2. Step 2: Convert to fraction form
    243,005.60/335,346.80 = 135,575.60/x
  3. Step 3: Cross multiply
    243,005.60x = 335,346.80 × 135,575.60
  4. Step 4: Simplify right side
    243,005.60x = 45,464,843,618.08
  5. Step 5: Solve for x
    x = 45,464,843,618.08/243,005.60
  6. Step 6: Final answer
    x = 187,093.81

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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.