Home / 283,213.19-390,834.32-155,887.88

Finding the Fourth Proportional to 283,213.19, 390,834.32 and 155,887.88

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Solution

The fourth proportional to 283,213.19, 390,834.32 and 155,887.88 is: 215,125.33

Step by Step Solution

  1. Step 1: Write the proportion equation
    283,213.19 : 390,834.32 = 155,887.88 : x
  2. Step 2: Convert to fraction form
    283,213.19/390,834.32 = 155,887.88/x
  3. Step 3: Cross multiply
    283,213.19x = 390,834.32 × 155,887.88
  4. Step 4: Simplify right side
    283,213.19x = 60,926,330,842.43
  5. Step 5: Solve for x
    x = 60,926,330,842.43/283,213.19
  6. Step 6: Final answer
    x = 215,125.33

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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.