Home / 283,208.67-390,825-155,881.53

Finding the Fourth Proportional to 283,208.67, 390,825 and 155,881.53

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Solution

The fourth proportional to 283,208.67, 390,825 and 155,881.53 is: 215,114.88

Step by Step Solution

  1. Step 1: Write the proportion equation
    283,208.67 : 390,825 = 155,881.53 : x
  2. Step 2: Convert to fraction form
    283,208.67/390,825 = 155,881.53/x
  3. Step 3: Cross multiply
    283,208.67x = 390,825 × 155,881.53
  4. Step 4: Simplify right side
    283,208.67x = 60,922,398,962.25
  5. Step 5: Solve for x
    x = 60,922,398,962.25/283,208.67
  6. Step 6: Final answer
    x = 215,114.88

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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.