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Finding the Fourth Proportional to 283,195.70, 390,807.06 and 155,868.56

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Solution

The fourth proportional to 283,195.70, 390,807.06 and 155,868.56 is: 215,096.96

Step by Step Solution

  1. Step 1: Write the proportion equation
    283,195.70 : 390,807.06 = 155,868.56 : x
  2. Step 2: Convert to fraction form
    283,195.70/390,807.06 = 155,868.56/x
  3. Step 3: Cross multiply
    283,195.70x = 390,807.06 × 155,868.56
  4. Step 4: Simplify right side
    283,195.70x = 60,914,533,680.03
  5. Step 5: Solve for x
    x = 60,914,533,680.03/283,195.70
  6. Step 6: Final answer
    x = 215,096.96

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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.