Home / 283,239.36-390,881.48-155,926.80

Finding the Fourth Proportional to 283,239.36, 390,881.48 and 155,926.80

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Solution

The fourth proportional to 283,239.36, 390,881.48 and 155,926.80 is: 215,185.13

Step by Step Solution

  1. Step 1: Write the proportion equation
    283,239.36 : 390,881.48 = 155,926.80 : x
  2. Step 2: Convert to fraction form
    283,239.36/390,881.48 = 155,926.80/x
  3. Step 3: Cross multiply
    283,239.36x = 390,881.48 × 155,926.80
  4. Step 4: Simplify right side
    283,239.36x = 60,948,898,355.66
  5. Step 5: Solve for x
    x = 60,948,898,355.66/283,239.36
  6. Step 6: Final answer
    x = 215,185.13

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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.