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Finding the Fourth Proportional to 243,428.22, 335,946.74 and 135,998.87

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Solution

The fourth proportional to 243,428.22, 335,946.74 and 135,998.87 is: 187,687.26

Step by Step Solution

  1. Step 1: Write the proportion equation
    243,428.22 : 335,946.74 = 135,998.87 : x
  2. Step 2: Convert to fraction form
    243,428.22/335,946.74 = 135,998.87/x
  3. Step 3: Cross multiply
    243,428.22x = 335,946.74 × 135,998.87
  4. Step 4: Simplify right side
    243,428.22x = 45,688,374,660.46
  5. Step 5: Solve for x
    x = 45,688,374,660.46/243,428.22
  6. Step 6: Final answer
    x = 187,687.26

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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.