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Finding the Fourth Proportional to 242,688.75, 334,921.92 and 135,259.56

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Solution

The fourth proportional to 242,688.75, 334,921.92 and 135,259.56 is: 186,664.57

Step by Step Solution

  1. Step 1: Write the proportion equation
    242,688.75 : 334,921.92 = 135,259.56 : x
  2. Step 2: Convert to fraction form
    242,688.75/334,921.92 = 135,259.56/x
  3. Step 3: Cross multiply
    242,688.75x = 334,921.92 × 135,259.56
  4. Step 4: Simplify right side
    242,688.75x = 45,301,391,533.56
  5. Step 5: Solve for x
    x = 45,301,391,533.56/242,688.75
  6. Step 6: Final answer
    x = 186,664.57

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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.