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Finding the Fourth Proportional to 243,409.67, 335,864.30 and 135,980.58

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Solution

The fourth proportional to 243,409.67, 335,864.30 and 135,980.58 is: 187,630.27

Step by Step Solution

  1. Step 1: Write the proportion equation
    243,409.67 : 335,864.30 = 135,980.58 : x
  2. Step 2: Convert to fraction form
    243,409.67/335,864.30 = 135,980.58/x
  3. Step 3: Cross multiply
    243,409.67x = 335,864.30 × 135,980.58
  4. Step 4: Simplify right side
    243,409.67x = 45,671,021,635.39
  5. Step 5: Solve for x
    x = 45,671,021,635.39/243,409.67
  6. Step 6: Final answer
    x = 187,630.27

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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.