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Finding the Fourth Proportional to 283,260.62, 390,902.28 and 155,938.34

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Solution

The fourth proportional to 283,260.62, 390,902.28 and 155,938.34 is: 215,196.35

Step by Step Solution

  1. Step 1: Write the proportion equation
    283,260.62 : 390,902.28 = 155,938.34 : x
  2. Step 2: Convert to fraction form
    283,260.62/390,902.28 = 155,938.34/x
  3. Step 3: Cross multiply
    283,260.62x = 390,902.28 × 155,938.34
  4. Step 4: Simplify right side
    283,260.62x = 60,956,652,645.42
  5. Step 5: Solve for x
    x = 60,956,652,645.42/283,260.62
  6. Step 6: Final answer
    x = 215,196.35

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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.