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Finding the Fourth Proportional to 283,241.56, 390,873.30 and 155,917.12

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Solution

The fourth proportional to 283,241.56, 390,873.30 and 155,917.12 is: 215,165.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    283,241.56 : 390,873.30 = 155,917.12 : x
  2. Step 2: Convert to fraction form
    283,241.56/390,873.30 = 155,917.12/x
  3. Step 3: Cross multiply
    283,241.56x = 390,873.30 × 155,917.12
  4. Step 4: Simplify right side
    283,241.56x = 60,943,839,220.90
  5. Step 5: Solve for x
    x = 60,943,839,220.90/283,241.56
  6. Step 6: Final answer
    x = 215,165.60

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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.