Home / 283,141.29-390,735.04-155,816.89

Finding the Fourth Proportional to 283,141.29, 390,735.04 and 155,816.89

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Solution

The fourth proportional to 283,141.29, 390,735.04 and 155,816.89 is: 215,027.34

Step by Step Solution

  1. Step 1: Write the proportion equation
    283,141.29 : 390,735.04 = 155,816.89 : x
  2. Step 2: Convert to fraction form
    283,141.29/390,735.04 = 155,816.89/x
  3. Step 3: Cross multiply
    283,141.29x = 390,735.04 × 155,816.89
  4. Step 4: Simplify right side
    283,141.29x = 60,883,117,380.45
  5. Step 5: Solve for x
    x = 60,883,117,380.45/283,141.29
  6. Step 6: Final answer
    x = 215,027.34

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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.